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to phrases
back valve
auto. 背压阀
compr. 回动阀; 逆止阀
construct. 止回〔止逆〕阀
met. 止回阀; 防逆阀
space 止回活门
tech. 止逆阀; 单向阀
back valve: 62 phrases in 15 subjects
Architecture2
Automobiles12
Chemistry1
Construction1
Earth sciences1
Electronics3
Hydroelectric power stations5
Metallurgy6
Mining1
Nautical1
Oil / petroleum3
Oil processing plants1
Plastics3
Refrigeration4
Technology18

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