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manual valve
auto. 自动变速器手控
met. 手动阀
oil 手动阀门
tech. 手控阀
manual valves
steel. 手动电磁
manual valve
: 33 phrases in 9 subjects
Automobiles4
Aviation4
Compressors1
Hydroelectric power stations1
Oil / petroleum3
Refrigeration1
Rowing2
Space4
Technology13