By test study the optimum economic fineness is found, which suits for the present ore properties. Using it to guide production and good economic effect is obtained.
通过试验研究，找到了适合于当前矿石的最佳经济细度，并指导生产，获得了较好的经济效益。
By test study the optimum economic fineness is found, which suits for the present ore properties. Using it to guide production and good economic effect is obtained.
通过试验研究，找到了适合于当前矿石的最佳经济细度，并指导生产，获得了较好的经济效益。
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