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| piston action | |||
| piston effect | |||
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活 塞 作用 : 23 phrases in 7 subjects |
| Automobiles | 1 |
| Compressors | 3 |
| Drilling | 3 |
| Oil / petroleum | 3 |
| Rail transport | 2 |
| Shipbuilding | 1 |
| Technology | 10 |
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