natgillin/translations-raw huggingface dataset:
Den består af carbonhydrider, overvejende C15 til og med C30, og danner en færdig olie med en viskositet på mindre end 19 106 m2.s-1 ved 40 °C)
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C15 through C30 and produces a finished oil with a viscosity of less than 19 106 m2.s-1 at 40 °C.)
25, og koger omtrent består af carbonhydrider, overvejende større end C over 400 °C)
25 hydrocarbons having carbon numbers predominantly greater than C and boiling above approximately 400 °C.)
Restolier (råolie), solventafvoksede; uspecificeret baseolie
Residual oils (petroleum), solventdewaxed; Base oil — unspecified
(En sammensat blanding af carbonhydrider opnået ved fjernelse af lange, forgrenede carbonhydrider fra en restolie ved solventkrystallisa-
(A complex combination of hydrocarbons obtained by removal of long, branchedchain hydrocarbons from a residual oil by solvent crystallisation.
25, og tion. Den består af carbonhydrider, overvejende større end C koger omtrent over 400 °C)
It consists of hydrocarbons having carbon numbers predo- and boiling above approximately 400 °C.) minantly greater than C25
40 °C. Den indeholder forholdsvis få normalparaffiner)
It consists of hydrocarbons having carbon numbers predominantly in the range of C20 than 19 106 m 2 through C50 and produces a finished oil of not less . s - 1 at 40 °C. It contains relatively few normal paraf- fins.)
Destillater (råolie), solventafvoksede lette naphthen; uspecificeret baseolie
Distillates (petroleum), solvent-dewaxed light naphthenic; Base oil — unspecified
Den består af carbonhydrider, overvejende C15 til og med C30, og danner en færdig olie med en viskositet på mindre end 19 106 m2.s-1 ved 40 °C.
It consists of hydrocarbons having carbon numbers predominantly in
Den indeholder forholdsvis få normalparaffiner)
30 and produces a finished oil with a visc- m2.s-1 at 40 °C. It contains relatively few the range of C15 through C osity of less than 19 106 normal paraffins.)
Den består overvejende af carbonhydrider, overvejende C20 til og med C50, og danner en færdig olie med en viskositet ikke mindre end 19 106 m 2
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 oil with a viscosity of not less than 19 106 m 2 and produces a finished. s - 1 at 40 °C.)
Den består overvejende af carbonhydrider, over- vejende C20 til og med C 50 på mindst 19 106 m2.s-1
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 produces a finished oil with a viscosity of at least 19 106 m2.s and - 1 at
Naphthenolier (råolie), katalytisk afvoksede lette; uspecificeret baseolie (En sammensat blanding af carbonhydrider opnået ved en katalytisk afvoksningsproces.
Naphthenic oils (petroleum), catalytic dewaxed light; Base oil — unspecified
. s - 1 ved 40 °C. Den indeholder forholdsvis få normalparaf- finer)
It consists of hydrocarbons having carbon numbers predominantly in the range of C15 through C30 and produces a finished oil with a viscosity of less than 19 106 m2.s-1 at 40 °C. It contains rela- tively few normal paraffins.)
Den består overvejende af carbonhydrider, over- vejende C20 til og med C på mindst 19 106 m2.s-1
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 produces a finished oil with a viscosity of at least 19 106 m2.s and - 1 at
Den består overvejende af carbonhydrider, over- vejende C15 til og med C30, og danner en færdig olie med en viskositet på mindre end 19 106 m2.s-1 ved 40 °C)
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C15 through C30 produces a finished oil with a viscosity of less than 19 106 m2.s and - 1 at
(En sammensat blanding af carbonhydrider opnået ved at fjerne ligekædede paraffincarbonhydrider som et faststof ved behandling med et reagens, såsom urinstof.
(A complex combination of hydrocarbons obtained by removing straight chain paraffin hydrocarbons as a solid by treatment with an agent such as urea.
, og danner en færdig olie med en viskositet på mindst til og med C 50 19 106 m2.s-1 ved 40 °C. Den indeholder forholdsvis få normalparaf- finer)
It consists of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and produces a finished oil with a viscosity of at least 19 106 m2.s-1 at 40 °C. It contains rela- tively few normal paraffins.)
Naphthenolier (råolie), komplekse afvoksede lette; uspecificeret baseolie (En sammensat blanding af carbonhydrider opnået fra en katalytisk afvoksningsproces.
Naphthenic oils (petroleum), complex dewaxed light; Base oil — unspecified
. s ved 40 °C. Den indeholder relativt få normalparaffiner)
, hydrotreated neutral oil-based high-
Smøreolier (råolie), C20-50, hydrogenbehandlede olie baseret, høj viskositet; uspecificeret baseolie
Lubricating oils (petroleum), C20 - 50 viscosity; Base oil — unspecified
(En sammensat blanding af carbonhydrider opnået ved at behandle let vakuumgasolie, tung vakuumgasolie og solventafasfalteret restolie med hydrogen, i tilstedeværelse af en katalysator, i en totrinsproces med afvoksning udført mellem de to trin.
(A complex combination of hydrocarbons obtained by treating light vacuum gas oil, heavy vacuum gas oil, and solvent deasphalted residual oil with hydrogen in the presence of a catalyst in a two stage process with dewaxing being carried out between the two stages.
Den består overvejende af carbonhydrider, overvejende C20 til og med C50, og danner en færdig olie med en viskositet på omtrent 112 106 m2.s-1 ved 40 °C. Den inde- holder en relativ stor mængde af mættede carbonhydrider)
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and produces a finished oil having a viscosity of approximately 112 106 m2.s-1 at 40 °C. It contains a rela- tively large proportion of saturated hydrocarbons.)
15 - 30, hydrogenbehandlede neutral olie baserede;
15 - 30 , hydrotreated neutral oil-based; Base
Smøreolier (råolie), C uspecificeret baseolie
Lubricating oils (petroleum), C oil — unspecified
(En sammensat blanding af carbonhydrider opnået ved at behandle let vakuumgasolie, tung vakuumgasolie og solventafasfalteret restolie med hydrogen, i tilstedeværelse af en katalysator, i en totrinsproces med afvoksning udført mellem de to trin.
(A complex combination of hydrocarbons obtained by treating light vacuum gas oil and heavy vacuum gas oil with hydrogen in the presence of a catalyst in a two stage process with dewaxing being carried out between the two stages. It consists predominantly of hydro- carbons having carbon numbers predominantly in the range of C
Den består overvejende af carbonhydrider, overvejende C15 til og med C30, og danner en færdig olie med en viskositet på omtrent 15 106 m2.s-1 ved 40 °C. Den inde- holder en relativ stor mængde mættede carbonhydrider)
15 through C and produces a finished oil having a viscosity of approxi-
205 0 , hydrogenbehandlede neutral olie baserede;
20 - 50, hydrotreated neutral oil-based; Base
(En sammensat blanding af carbonhydrider opnået ved at behandle let vakuumgasolie, tung vakuumgasolie og solventafasfalteret restolie med hydrogen, i tilstedeværelse af en katalysator, i en totrinsproces med afvoksning udført mellem de to trin.
(A complex combination of hydrocarbons obtained by treating light vacuum gas oil, heavy vacuum gas oil and solvent deasphalted residual oil with hydrogen in the presence of a catalyst in a two stage process with dewaxing being carried out between the two stages.
Den består overvejende af carbonhydrider, overvejende C20 til og med C50, og danner en færdig olie med en viskositet på omtrent 32 106 m2.s-1 ved 40 °C. Den inde- holder en relativ stor mængde mættede carbonhydrider)
- 1 in the range of C20 through C50 osity of approximately 32 106 m2.s at 40 °C. It contains a relatively large proportion of saturated hydrocarbons.)
Den består overvejende af mættede carbonhydrider, C15 til og med C50)
. ) through C50
Den består overvejende af carbonhydrider, over- vejende C20 på 19 106 til og med C50, og danner en færdig olie med en viskositet m2.s-1 eller mere ved 40 °C. Den indeholder forholdsmæs- sigt få normalparaffiner)
106 m2.s at 40 °C. It contains relatively few normal paraffins.)
Den består overvejende af carbonhydrider, over- vejende C12 til og med C30 på mindre end 19 106 m 2
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C12 through C30 produces a finished oil with a viscosity of less than 19 106 m2.s and - 1 at
Destillater (råolie), solventafvoksede tunge paraffin, lerbehandlede; uspecificeret baseolie
Distillates (petroleum), solvent-dewaxed heavy paraffinic, clay-treated; Base oil — unspecified
(En sammensat blanding af carbonhydrider opnået fra en afvoksning af et tungt paraffindestillat med neutral eller modifieret ler i enten en kontakteller perkoleringsproces.
(A complex combination of hydrocarbons obtained by treating dewaxed heavy paraffinic distillate with neutral or modified clay in either a contacting or percolation process.
Den består overvejende af carbon- hydrider, overvejende C20 til og med C50)
C20 through C50.)
Carbonhydrider, C20-50, solventafvoksede tunge paraffin, hydrogenbehandlede; uspecificeret baseolie
Hydrocarbons, C20-50, solvent-dewaxed heavy paraffinic, hydrotreated; Base oil — unspecified
Den består overvejende af carbonhydrider, overvejende C
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C20 through C50.)
Destillater (råolie), solventafvoksede lette paraffin, lerbehandlede; uspecificeret baseolie
Distillates (petroleum), solvent dewaxed light paraffinic, clay-treated; Base oil — unspecified
(En sammensat blanding af carbonhydrider fremkommet ved behandling af et afvokset let paraffindestillat med naturligt eller modificeret ler i enten en kontakteller perkoleringsproces.
(A complex combination of hydrocarbons resulting from treatment of dewaxed light paraffinic distillate with natural or modified clay in either a contacting or percolation process.
Den består overvejende af carbonhydrider, overvejende C15 til og med C30)
C15 through C30.)
Destillater (råolie), solventafvoksede lette paraffin, hydrogenbehandlede; uspecificeret baseolie
Distillates (petroleum), solvent dewaxed light paraffinic, hydrotreated; Base oil — unspecified
Den består overvejende af carbonhydrider, overvejende C
It consists of hydrocarbons having carbon numbers predomi- nantly in the range of C15 through C30.)
Restolier (olie), hydrogenbehandlede, solventafvoksede; uspecificeret baseolie
Residual oils (petroleum), hydrotreated solventdewaxed; Base oil — unspecified
Destillater (råolie), afvoksede tunge paraffin, hydrogenbehandlede; uspecificeret baseolie
Distillates (petroleum), dewaxed heavy paraffinic, hydrotreated; Base oil — unspecified
Den består overvejende af mættede carbonhydrider, overvejende
It consists predominantly of saturated hydrocarbons having and produces a
Destillater (råolie), afvoksede lette paraffin, hydrogenbehandlede; uspecificeret baseolie
Distillates (petroleum), dewaxed light paraffinic, hydrotreated; Base oil — unspecified
Den består overvejende af mættede carbonhydrider, over- vejende C21 til og med C29, og danner en færdig olie med en viskositet på omtrent 13 106 m2.s-1 ved 50 °C)
- 1 carbon numbers in the range of C21 through C29 finished oil with a viscosity of approximately 13 106 m2.s at 50 °C.)
Den består over- vejende af naphthencarbonhydrider, overvejende C15 til og med C30, og danner en færdig olie med en viskositet på mellem 13 106 m2.s-1 til
It consists predominantly of naphthenic hydrocarbons having carbon numbers predominantly in the range of C15 through C30 and produces a finished oil with a viscosity of between 13-15 106 m2.s-1 at 40 °C.)
Smøreolier (råolie) C17-35, solventekstraherede, afvoksede, hydrogenbehandlede; uspecificeret baseolie
Lubricating oils (petroleum) C treated; Base oil — unspecified
Smøreolier (råolie), hydrokrakkede ikke-aromatiske solventafparaffinerede; uspecificeret baseolie solventafvoksede;
Lubricating oils (petroleum), hydrocracked nonarom. solvent-deparaf- fined; Base oil — unspecified
Restolier (råolie), hydrokrakkede syrebehandlede uspecificeret baseolie
Residual oils (petroleum), hydrocracked acid-treated solventdewaxed; Base oil — unspecified
(En sammensat blanding af carbonhydrider opnået fra svovlholdig paraffinråolie.
(A complex combination of hydrocarbons obtained from sulphurcontaining paraffinic crude oil.
Den består overvejende af en solventraffineret, afparaffi-
It consists predominantly of a solvent
Smøreolier (råolie), basisolier, paraffinske; uspecificeret baseolie
- 1 m2.s refined deparaffinated lubricating oil with a viscosity of 65 10 at 50 °C.)
(En sammensat blanding af carbonhydrider opnået ved raffinering af råolie.
Lubricating oils (petroleum), base oils, paraffinic; Base oil — unspecified
Den består overvejende af aromater, naphthener og paraffiner,
(A complex combination of hydrocarbons obtained by refining crude oil.
Carbonhydrider, hydrokrakkede paraffiniske destillationsrester, solventafvoksede; uspecificeret baseolie
Hydrocarbons, hydrocracked paraffinic distillation residues, solventdewaxed; Base oil — unspecified
Destillater (råolie), solventraffinerede hydrogenerede; uspecificeret baseolie
Distillates (petroleum), solvent-refined hydrotreated heavy; hydrogenated; Base oil — unspecified
Den består overvejende af til og med C27, med kogeinterval
It consists predominantly of hydrocarbons having carbon numbers predominantly in and boiling in the range of approximately
18 carbonhydrider, overvejende C omtrent fra 370 °C til 450 °C)
27 the range of C18 through C3 70 °C to 450 °C.)
(En sammensat blanding af carbonhydrider opnået ved solventafparaffinering af destillationsresten fra hydrokrakket råolie. Den består over- til og med C40, med koge-
(A complex combination of hydrocarbons obtained by solvent deparaffination of the distillation residue from hydrocracked petroleum.
18 vejende af carbonhydrider, overvejende C interval omtrent fra 370 °C til 550 °C)
40 predominantly in the range of C18 through C range of approximately 370 °C to 550 °C.)
Den består overvejende af carbon- til og med C40, med kogeinterval omtrent fra
It consists predominantly of hydro- carbons having carbon numbers predominantly in the range of C
18 hydrider, overvejende C3 70 °C til 550 °C)
40 through C5 50 °C.)
(En sammensat blanding af carbonhydrider opnået ved solventbehandlingen af et destillat fra hydrokrakkede råoliedestillater. Den består til og med C27, med
(A complex combination of hydrocarbons obtained by the solvent treatment of a distillate from hydrocracked petroleum distillates.
18 overvejende af carbonhydrider, overvejende C kogeinterval omtrent fra 370 °C til 450 °C)
27 predominantly in the range of C18 through C range of approximately 370 °C to 450 °C.)
Den består overvejende til og med C40, med kogeinterval
It consists predominantly of hydrocarbons having carbon numbers predominantly in and boiling in the range of approximately
19 af carbonhydrider, overvejende C omtrent fra 390 °C til 550 °C)
40 the range of C19 through C3 90 °C to 550 °C.)
Den består overvejende af carbonhydrider, overvejende C til og med C
It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C through C and boiling in
. s - 1 ved omtrent 100 °C)
- 1 oil having a viscosity of 4 106 m2.s at approximately 100 °C.) distillation
(En sammensat blanding af carbonhydrider opnået som forløb fra vakuumdestillationen af udløb fra den katalytiske hydrogenbehandling
(A complex combination of hydrocarbons obtained as first runnings from the vacuum distillation of effluents from the catalytic hydrotreat- ment of a solvent deasphalted short residue having a viscosity of 8 106 m2.s-1 at approximately 100 °C. It consists predominantly of hydro- carbons having carbon numbers predominantly in the range of C
- 1 af en solventafasfalteret kort rest, med en viskositet på 8 106 m 2. s ved omtrent 100 °C. Den består overvejende af carbonhydrider, over- til og med C40, med kogeinterval omtrent fra 300 °C til vejende C17 500 °C)
17 and boiling in the range of approximately 300 °C to
Carbonhydrider, C ceret baseolie
Hydrocarbons, C unspecified
(En sammensat blanding af carbonhydrider opnået ved ekstraktion af aromaterne fra et let naphthendestillat med en viskositet på 9,5 106 m 2
9,5 106 m2.s at 40 °C. It consists predominantly of hydrocarbons
. s - 1 ved 40 °C. Den består overvejende af carbonhydrider, over- til og med C27, med kogeinterval omtrent fra 240 °C til vejende C13 400 °C)
27 having carbon numbers predominantly in the range of C13 through C and boiling in the range of approximately 240 °C to 400 °C.)
(En sammensat blanding af carbonhydrider opnået ved ekstraktion af aromaterne fra et let naphthendestillat, med en viskositet på 16 106 m 2
(A complex combination of hydrocarbons obtained by extraction of the aromatics from a light naphthenic distillate having a viscosity of
. s - 1 ved 40 °C. Den består overvejende af carbonhydrider, over- til og med C29, med kogeinterval omtrent fra 250 °C til vejende C14 425 °C)
29 having carbon numbers predominantly in the range of C14 through C and boiling in the range of approximately 250 °C to 425 °C.)
, dearomatiserede; uspecificeret baseolie
, dearomatised; Base oil — unspecified
Carbonhydrider, C17-30, hydrogenbehandlede destillater, lette destillationsfraktioner; uspecificeret baseolie
17 - 30 , hydrotreated distillates, distillation lights; Base oil
2 74 5, naphthenske vakuumdestillations-; uspecificeret
2 74 5, naphthenic vacuum distillation; Base oil —
, hydrogenbehandlede; uspecificeret baseolie
, hydrotreated; Base oil — unspecified
, naphthenske; uspecificeret baseolie
, naphthenic; Base oil — unspecified
Restolier (råolie), carbonbehandlede solventafvoksede; uspecificeret baseolie
Residual oils (petroleum), carbon-treated solventdewaxed; Base oil — unspecified
Restolier (råolie), lerbehandlede solventafvoksede; uspecificeret baseolie
(A complex combination of hydrocarbons obtained by the treatment of solvent-dewaxed petroleum residual oils with activated charcoal for the removal of trace polar constituents and impurities.)
(En sammensat blanding af carbonhydrider opnået ved behandling af solventafvoksede råolierestolier med blegejord, for at fjerne spor af polære bestanddele og urenheder)
(A complex combination of hydrocarbons obtained by treatment of solvent-dewaxed petroleum residual oils with bleaching earth for the removal of trace polar constituents and impurities.) deasphalted,
Smøreolier (råolie), C25, solventekstraherede, afasfalterede, afvoksede, hydrogenerede; uspecificeret baseolie
Lubricating oils (petroleum) C25, solvent-extracted, dewaxed, hydrogenated; base oil — unspecified
Den består over- vejende af carbonhydrider, overvejende større end C
It consists predominantly of hydrocarbons having carbon numbers predominantly and produces a finished oil with a visc- in the range of greater than C25 osity in the order of 32 106 m 2
Smøreolier (råolie), C17-32, solventekstraherede, afvoksede, hydrogenerede; uspecificeret baseolie
Lubricating oils (petroleum) C1 73 2 genated; Base oil — unspecified
Den består overvejende af carbonhydrider, overvejende C17 til og med C32, og danner en færdig olie med en viskositet i området fra 17 106 m2.s-1 til
It consists predominantly of hydrocarbons having carbon numbers predominantly and produces a finished oil with a visc- in the range of C17 through C32 osity in the order 17 106 m2.s-1 to 23 106 m 2
23 106 m 2. s ved 40 °C)
. s - 1 at 40 °C.)
Smøreolier (råolie), C20-35, solventekstraherede, afvoksede, hydrogenerede; uspecificeret baseolie
Lubricating oils (petroleum) C20 - 35 genated; Base oil — unspecified
Den består overvejende af carbonhydrider, overvejende C20 til og med C35, og danner en færdig olie med en viskositet i området fra 37 106 m2.s-1 til
It consists predominantly of hydrocarbons having carbon numbers predominantly and produces a finished oil with a visc- in the range of C20 through C35 osity in the order of 37 106 m 2
44 106 m 2. s ved 40 °C)
. s - 1 at 40 °C.)
Smøreolier (råolie), C24-50, solventekstraherede, afvoksede, hydrogenerede; uspecificeret baseolie
Lubricating oils (petroleum) C2 450 genated; Base oil — unspecified
Den består overvejende af carbonhydrider, overvejende C24 til og med C50, og danner en færdig olie med en viskositet i området fra 16 106 m2.s-1 til
It consists predominantly of hydrocarbons having carbon numbers predominantly and produces a finished oil with a visc- in the range of C24 through C50 osity in the order of 16 106 m 2
75 106 m 2. s ved 40 °C)
. s - 1 at 40 °C.)
Ekstrakter (råolie), tungt naphthendestillat solvent, aromatkoncentrat; aromatisk ekstrakt af destillat (behandlet)
Extracts (petroleum), heavy naphthenic distillate solvent, aromatic concentrate; Distillate aromatic extract (treated) to heavy
(Et aromatkoncentrat fremstillet ved at sætte vand til solventekstrakter og ekstraktionssolvent af tungt naphthadestillat)
(An aromatic concentrate produced by adding water naphthenic distillate solvent extract and extraction solvent.)
Den består af mættede og aromatiske carbonhydrider, overvejende C til og med
It consists of saturated and aromatic hydrocarbons having carbon numbers predominantly in the range of C20 through C50.)
Ekstrakter (råolie), tunge paraffindestillater, aromatisk ekstrakt af destillat (behandlet)
Extracts (petroleum), heavy paraffinic distillates, solvent-deasphalted; Distillate aromatic extract (treated)
Ekstrakter (råolie), tungt naphthendestillat solvent, hydrogenbehandlede; aromatisk ekstrakt af destillat (behandlet)
Extracts (petroleum), heavy naphthenic distillate solvent, hydrotreated; Distillate aromatic extract (treated)
50 , og danner en færdig olie på hydrider, overvejende C20 til og med C mindst 19 106 m2.s-1 ved 40 °C)
It consists predominantly of aromatic hydrocarbons having and carbon numbers predominantly in the range of C20 through C50 produces a finished oil of at least 19 106 m2.s-1 at 40 °C.)
Ekstrakter (råolie), tungt paraffindestillatsolvent-, hydrogenbehandlede; aromatisk ekstrakt af destillat (behandlet)
Extracts (petroleum), heavy paraffinic distillate solvent, hydrotreated; Distillate aromatic extract (treated)
(En sammensat blanding af carbonhydrider fremstillet ved at behandle et tungt paraffindestillat-solventekstrakt med hydrogen i tilstedeværelse af en katalysator.
(A complex combination of hydrocarbons produced by treating a heavy paraffinic distillate solvent extract with hydrogen in the presence of a catalyst. It consists predominantly of hydrocarbons having carbon and boiling in
Den består overvejende af carbonhydrider, over- til og med C33, med kogeinterval omtrent fra 350 °C til vejende C21 480 °C)
33 numbers predominantly in the range of C21 through C the range of approximately 350 °C to 480 °C.)
Ekstrakter (råolie), let paraffindestillatsolvent-, hydrogenbehandlede; aromatisk ekstrakt af destillat (behandlet)
Extracts (petroleum), light paraffinic distillate solvent, hydrotreated; Distillate aromatic extract (treated)
Den består overvejende af carbonhydrider, overvejende
It consists predominantly of hydrocarbons having carbon and boiling in
Den består overvejende af aromatiske carbonhydrider, overvejende C til og med
It consists predominantly of aromatic hydrocarbons having carbon numbers predomi- nantly in the range of C16 through C36.)
Ekstrakter (råolie), let naphthendestillat solvent, hydroafsvovlede; aromatisk ekstrakt af destillat (behandlet)
Extracts (petroleum), light naphthenic distillate solvent, hydrodesulphurised; Distillate aromatic extract (treated)
Den består overvejende af aromatiske carbonhy- drider, overvejende C15 til og med C30.
It consists predominantly of aromatic hydrocar- bons having carbon numbers predominantly in the range of C
Denne strøm indeholder sandsynligvis 5 vægtprocent, eller mere, aromatiske carbonhydrider, bestående af 4til 6leddede kondenserede ringe)
30 to sixmembered condensed ring aromatic hydrocarbons.)