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| 开口滑轮 | |||
| 开口滑车; 扣绳滑轮 | |||
| 楼地板块件; 楼板砌块; 地板装的滑车; 地板预制块; 地板木 (块); 消力墩 | |||
| floor block: 43 phrases in 2 subjects |
| Architecture | 5 |
| Technology | 38 |
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