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| 抽水效率 | |||
| 抽运效率 | |||
| 挤塑效率 | |||
| 泵送效率; 泵的效率 | |||
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| 泵的上水效率 | |||
| 水泵效率 | |||
| 泵效 | |||
| 泵的效率 | |||
| 泵效率 | |||
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pumping efficiency : 15 phrases in 6 subjects |
| Aviation | 1 |
| Drilling | 1 |
| Hydroelectric power stations | 3 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
| Technology | 7 |
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