Lot of fund and people have been put into the washing water close-cycling practic for many years .It has reached to the first class standard.
英
美
释义
鹤岗矿务局选煤厂多年来投入大量资金、人力、物力致力于洗水闭路循环实践,基本达到了一级洗水闭路循环标准。
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