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辅助阀
dril. auxiliary valve; utility valve
steel. pilot valve
tech. booster valve; jockey valve; service valve
辅助〔工作〕阀
chem. service valve
辅助 阀: 29 phrases in 7 subjects
Architecture1
Automobiles6
Aviation4
Hydroelectric power stations1
Metallurgy1
Shipbuilding5
Technology11