以好产率
With good yield
以上为机器翻译结果，长、整句建议使用 人工翻译 。
建议要平衡好精煤灰分与产率的关系，并拟进行浮选系统的技术改造工程以进一步提高精煤产率及经济效益。
So the relations of washed coal ash and ratio must be balanced, and technology reformation works of floatation system would be done to increase ratio and economic benefits.
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