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| 滑车轮 | |||
| 槽轮用于楔形和圆形带 | |||
| 有槽轮 | |||
| 槽轮; 三角皮带轮 | |||
| 有槽 (滑轮) | |||
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grooved pulley : 4 phrases in 2 subjects |
| Chemistry | 1 |
| Technology | 3 |
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