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| контрольный эксперимент | |||
| эксперимент управления; сравнительный опыт | |||
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控制实验 : 16 phrases in 5 subjects |
| Electronics | 2 |
| General | 9 |
| Gold mining | 1 |
| Name of organization | 1 |
| Oil processing plants | 3 |
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