气体保护焊机

gas range

exhaust gas【环境】;off-gas【环境】[专业]炼油时产生的\ntail gas【油气】;vent gas【环境】

high resolution gas chromatography， HRGC

liquified gas density meter

exploitative engineering of offshore petroleum-gas reservoir【油气】

jet-propulsion plants having more than one gas turbine

gas socket, quick-acting pipe coupling with cut-off apparatus

Schilling's specific gravity gas