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| 钢筋混凝土管; 钢筋水泥管 | |||
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reinforced concrete pipe : 27 phrases in 7 subjects |
| Bridge construction | 5 |
| Construction | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Technology | 17 |
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