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泵吸入口
| 止回阀
| 泵吸入口 | |
| oil | pump intake |
| 止回阀 | |
| compr. | nonreturn flap |
| hydroel.st. | check valve; back pressure valve; non-return valve; non-return valve; inverted valve |
| met. | back valve; retaining valve |
| wind. | anti-return valve |
| |||
| pump intake | |||
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泵吸入口 : 4 phrases in 3 subjects |
| Mining | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
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