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| 曲柄月牙板; 曲柄导向装置 | |||
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| 连杆; 摇拐; 曲柄连杆机构 | |||
| 曲柄导槽 | |||
| 曲柄导向装置 | |||
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crank guide : 3 phrases in 3 subjects |
| Automobiles | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
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