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| 支柱材料; 紧固材料支柱材料; 紧固器材 | |||
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| 加固材料; 坑木 | |||
| 支架材料; 紧固材料 | |||
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| 紧固用器材 | |||
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крепежный материал : 2 phrases in 2 subjects |
| Mining | 1 |
| Technology | 1 |
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