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| concrete proportioning | |||
| concrete mix proportion (比); concrete proportioning (比); proportioning of concrete (比) | |||
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混凝土 配 合 : 36 phrases in 5 subjects |
| Bridge construction | 2 |
| Engineering geology | 2 |
| Hydroelectric power stations | 2 |
| Metallurgy | 2 |
| Technology | 28 |
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