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| 空心混凝土砌块; 空心混凝土块 (体); 混凝土空心方块 | |||
| hollow concrete block: 26 phrases in 6 subjects |
| Architecture | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Project management | 1 |
| Rail transport | 1 |
| Technology | 20 |
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