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| 水力活塞 | |||
| 液压活塞 | |||
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hydraulic piston : 24 phrases in 8 subjects |
| Automobiles | 4 |
| Drilling | 1 |
| Earth sciences | 2 |
| Engineering geology | 1 |
| Oil / petroleum | 3 |
| Rail transport | 1 |
| Steel production | 1 |
| Technology | 11 |
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