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| 双差拍; 双打纬 | |||
| 双支点撑，承的 | |||
| English thesaurus | |||
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| d.b.valve (valve) | |||
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double- beat : 7 phrases in 5 subjects |
| Construction | 1 |
| Mechanic engineering | 1 |
| Mechanics | 1 |
| Port facilities | 1 |
| Technology | 3 |
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