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| 转向轮 | |||
| 齿轮换向器 | |||
| gear tumbler: 7 phrases in 6 subjects |
| Mechanic engineering | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
| Textile industry | 1 |
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