track valve
英
美
- (防检塞)轨道(人造)瓣(膜)
双语例句
- Our pilotless rocket enters the track of the earth.
我们把一个无人驾驶的火箭送入了地球的轨道里。 - His mind sagged round and round on the same track.
他的念头一而再再而三地在一条轨道上转着。
相关词汇
trackway
track
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