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Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions, the mining coal method of caving working face is found. 通过对焦作矿区高瓦斯多水害防治技术研究，找出适合该条件下的炮采放顶煤模式的采煤方法。
Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions,the mining coal method of caving working face is found. 通过对焦作矿区高瓦斯多水害防治技术研究,找出适合该条件下的炮采放顶煤模式的采煤方法。
They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany. 德国西北部一区，位于鲁尔河的峡谷中，是一个主要的工业和煤矿开采区。
That coal mine is no longer worked. 那个煤矿已经不经营了。
Mechanical characteristics of soft-rock at excavation disturbed zone in the complex stress environment of deep mining in the western coal mine region of China 西部矿区深部复杂应力环境下开采扰动区松软岩层力学特性
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。
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。
A city of southeast Ontario, Canada, on Lake Nipissing east-southeast of Sudbury.It is a trade center in a lumber and mining region. 北湾市加拿大安大略东南的城市，位于萨德伯里东南偏东尼比斯英湖上。
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。