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- Analysis on coal pillar width influenced to mechanics characteristics of surround rocks in fully mechanized coal mining gateway 煤柱宽度对综放回采巷道围岩力学特征影响分析
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- coal mining gateway 回采巷道
- Coal mining has always been a dangerous occupation. 采煤向来是一种危险职业。
- General bituminous coal mining; Motor freight. 一般烟煤开采;汽车货运。
- They underwrote the coal mine's bonds. 他们同意买下该煤矿的未认购的股票。
- The landscape was destroyed by coal mining. 自然景观由于挖煤而受到了破坏。
- There is a coal mine near my home town. 我的家乡附近有一个煤矿。
- Jiamusi Coal Mining Machinery Co. 和佳木斯煤矿机械有限公司。
- XUZHOU COAL MINING GROUP CO., LTD. 江苏徐州矿务集团有限公司。
- A coal mining boom has swept across north China. 煤炭行业的繁荣,在华北到处可见。
- Heilongjiang Coal Mining Machinery Group Co. 宣布,已向国有黑龙江煤矿机械集团有限公司。
- Based on bolting gateway of the No. 13221 working face in Wannian Coal Mine, thispaper analyzed the laws of strata movment. 以万年煤矿13221工作面下顺槽锚杆支护煤巷为例,分析研究了受采动影响的锚杆支护煤巷的变形规律。
- The coal mining area is in the center of the basin. 煤矿区位于盆地的中心。
- Township enterprises mainly in coal mining. 乡镇企业以开采煤炭为主。
- Scope: Coal mining. Coal mining. 经营范围:开采原煤。
- We decided to open out a coal mine near the city. 我们决定在城市附近开发一煤矿。
- The coal mine was closed down due to exhaustion. 这煤矿因矿源枯竭而关闭了。
- Based on the simple azimuth angle formula, derive frontal intersection formula indicated by azimuth angle formula in this paper,and it was applied in mine gateway connect survey. 以简单的方位角计算公式为基础,推导出了以方位角表示的前方交会定点公式,并在该矿的贯通测量中得到了应用。