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| 驱动皮带轮 | |||
| 主动带轮 | |||
| 驱动滑轮; 主动滑轮 | |||
| 传动皮带轮 | |||
| 主驱动轮 | |||
| 主动〔驱动〕轮 | |||
| 主动轮 | |||
| 主动皮带轮 | |||
| 主动滑车 | |||
| driving pulley: 2 phrases in 1 subject |
| Technology | 2 |
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