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| 机械分组 ｛土壤｝ | |||
| 机械分离; 机械分选; 机械收尘 | |||
| 机械分离法 | |||
| mechanical separation: 7 phrases in 5 subjects |
| Electronics | 1 |
| Metallurgy | 3 |
| Name of organization | 1 |
| Technology | 1 |
| Water resources | 1 |
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