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hand valve
chem. 手动阀门
el. 人工操作阀
met. 手动阀
refrig. 手阀
tech. 手动控制阀; 手动阀 (门)
hand valve: 38 phrases in 12 subjects
Automobiles3
Aviation1
Compressors2
Drilling1
Earth sciences1
Electronics2
Mechanics1
Metallurgy1
Oil / petroleum2
Refrigeration3
Shipbuilding1
Technology20

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