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| 混凝土路基 | |||
| 混凝土压载块 | |||
| 混凝土压舱块 | |||
| 混凝土用石渣; 混凝土压载物; 混凝土压载 | |||
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concrete ballast : 11 phrases in 4 subjects |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 1 |
| Technology | 8 |
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