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| 行走机构运行机构; 运行机构 | |||
| 行驶机构; 迁移机构 | |||
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| 移动机构; 迁移〔移动〕机构 | |||
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travelling mechanism : 5 phrases in 3 subjects |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Technology | 2 |
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