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| 集水管 | |||
| 集流管; 集风管; 集气管; 集流【风,气】管 | |||
| 集油管; 收集管 | |||
| 聚积管; 集汽管; 集尘管; 汇流管 | |||
| collecting pipe: 14 phrases in 4 subjects |
| Metallurgy | 2 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 10 |
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