TM9-4310-396-13
GLOSSARY-continued
V
Valve-A device used to control the flow of a fluid.
Vapor-The gaseous form of any substance which is usually a liquid; vapors are present in the air around the substance.
Velocity-Rapidity or speed.
Visual-Visible; detected by the unaided eye.
W
Weld-A union or joint (of metals) produced by applying heat, sometimes with pressure.
Glossary-5/(Glossary-6 blank)
