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| 双作用泵 | |||
| 双程泵; 双动泵 | |||
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| 双向两用水泵 | |||
| 双动式泵; 双作用泵 | |||
| 双作用式泵; 双动式水泵; 吸压双作用泵; 双动泵; 双向作用泵 | |||
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double acting pump : 20 phrases in 5 subjects |
| Construction | 2 |
| Drilling | 2 |
| Metallurgy | 2 |
| Oil / petroleum | 5 |
| Technology | 9 |
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