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| concrete jacket | |||
| concrete encasement | |||
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| concrete encasement | |||
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| concrete jacket | |||
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混凝土套 : 23 phrases in 5 subjects |
| Bridge construction | 2 |
| Engineering geology | 6 |
| Hydroelectric power stations | 1 |
| Metallurgy | 1 |
| Technology | 13 |
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