low seam mining machinery是什么意思 low seam mining machinery怎么读
low seam mining machinery的相关资料
lowadj.低的；少的；低落的；低声的；卑劣的；低等的adv.低地；低声地；低下地；廉价地n.低水平；低价；低谷v.哞哞叫
low-grage低品位
low seam mining machinery的用法和样例
- The reserves of thin coal seam shearer and the developing trend of coal seam shearer of our country are analysed.
分析我国薄煤层储量以及薄煤层采煤机的发展状况及趋势。
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