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| 联管箱 | |||
| 联管箱; 带连接管的配水干管 | |||
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pipe header : 22 phrases in 6 subjects |
| Architecture | 1 |
| Automobiles | 5 |
| Electronics | 2 |
| Engineering geology | 3 |
| Hydroelectric power stations | 3 |
| Technology | 8 |
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