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| 防护堤坝 | |||
| 防护堤; 防洪堤 | |||
| 护堤; 防护围墙 | |||
| protection embankment: 16 phrases in 5 subjects |
| Bridge construction | 2 |
| Engineering geology | 2 |
| Hydroelectric power stations | 3 |
| Oil / petroleum | 1 |
| Technology | 8 |
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