'valv'-'vent'
- valve
- valve area
- valve body
- valve bounce
- valve cage
- valve cover
- valve disk
- valve flutter
- valve guard
- valve lift
- valve obturator
- valve plate
- valve plug
- valve port
- valve seat
- valve stem
- valve trim
- Van't Hoff's principle
- vane ratio
- vaneaxial fan
- vapor
- vapor barrier
- vapor concentration
- vapor content
- vapor control
- vapor jet cycle
- vapor jet refrigerating cycle
- vapor lock
- vapor lock device
- vapor migration
- vapor permeance
- vapor pressure
- vapor pressure thermometer
- vapor quality
- vapor refrigerating system
- vapor retarder
- vapor transfer
- vapor transmission
- vapor-charged power element
- vapor-pressure thermometer
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