Excavate coal is primary production link in coal mine production, therefor, Weaving excavate coal working face supersedure plan has instructional meaning.
采
是矿生产中的主要生产环节,因而编制采
面接替计划对矿生产具有指导
意义。
Excavate coal is primary production link in coal mine production, therefor, Weaving excavate coal working face supersedure plan has instructional meaning.
采是矿生产中的主要生产环节,因而编制采面接替计划对矿生产具有指导意义。
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