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| 空心混凝土块 | |||
| 空心块 | |||
| 空心砖混凝土块; 孔心砌块; 空心砌块; 格孔砌块; 格孔方块; 多孔砖; 多孔砌块 | |||
| cellular block: 13 phrases in 3 subjects |
| Electronics | 1 |
| Engineering geology | 1 |
| Technology | 11 |
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