run of mine coal是什么意思

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用法例句

This paper expounds the technical transformation of the raw coal screening system in Xiqu Coal Washery, compares the technical characteristics and operational results of the equipment before and after the technical transformation, and analyzes on the economical and social benefits of this technical transformation.

阐述了西曲选煤厂原煤筛选系统的技术改造情况,比较了改造前后设备的技术特征及使用前后的效果,分析了该项技术改造的经济效益和社会效益。

The innovation and effect analysis of slack coal separation system technology was introduced in Fangezhuang Coal Mine Co.

介绍了范各庄矿业分公司选煤厂末煤分选系统技术改造及效果分析,提出了在改造过程中应注意的问题。