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凹陷垫块 | |||
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空心块体砖 | |||
空心块体; 空心板 | |||
空心砖; 空心石块件; 空心砌块; 空心块 (体); 空心混凝土砌体; 空心混凝土块件; 空心方块 (一种防波堤块体); 空心混凝土砌块 |
hollowing block : 86 phrases in 6 subjects |
Architecture | 3 |
Hydroelectric power stations | 1 |
Metallurgy | 3 |
Project management | 1 |
Rail transport | 1 |
Technology | 77 |