Assertion: tungsten | /r/ObjectUse | used for metal evaporation work
Facets:
value: extensively
type: DEGREE
Source sentences:
text: Tungsten and its alloys are used extensively for filaments for electric lamps, electron and television tubes, and for metal evaporation work; for electrical contact points for automobile distributors; X-ray targets; windings and heating elements for electrical furnaces; and for numerous spacecraft and high-temperature applications.