10月23日,新郑煤电公司24运输巷新投入一台崭新的EBZ320悬臂式掘进机。该掘进机可满足坡度正负18度的施工,切割硬度达到100MPa,切割高度5.7米,宽度可达7.1...
所属栏目:图片新闻 发布机构:郑煤集团 时间:2023-10-24
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