Assertion: bunsen burner | /r/MadeOf | a metal tube
Facets:
Source sentences:
text: The Bunsen burner consists of a metal tube on a base with a gas inlet at the lower end of the tube, which may have an adjusting valve; openings in the sides of the tube can be regulated by a collar to admit as much air as desired.
text: The Bunsen Burner consists of a metal tube on abase with a gas inlet at the lower end of the tube, which has an adjusting valve; opening in the sides