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楔形闸
 楔形闸
met. key-operated brake; wedge brake
|
 阀
compr. valve
dril. cock; fastener; threshold
hydroel.st. stopper
mech. breather
space valve

to phrases
楔形闸
met. key-operated brake; wedge brake
楔形闸
: 15 phrases in 6 subjects
Architecture1
Hydroelectric power stations1
Oil / petroleum1
Shipbuilding4
Space1
Technology7