(b) The fluxes used in gas welding are usually in powder form and are mixed with water to form a thin paste.
(The fluxes; used; L:in gas welding) (The fluxes used in gas welding; are; T:usually; in powder form) (The fluxes used in gas welding; are mixed; with water; to form a thin paste)
The fluxes The fluxes used in gas welding The fluxes used in gas welding
used are are mixed
L:in gas welding
T:usually in powder form
with water to form a thin paste