该词条未找到_海词词典

您要查找的是不是：

In consideration of the characteristics of the technological process of the hydraulic coal mining method, it is a general practice to use of the goaf as the ventilation airway. 水力采煤由于工艺自身的特点,一直沿用老塘串风的通风方式,在我国目前的安全形式下,如不改变,水采难以发展。
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。
Experimental study on technique and mechanism of bed filtration for recovery of dense coal slurry produced in hydraulic coal mine 水采浓煤浆床层过滤方式及机理的试验研究
hydraulic coal mining 水力采煤,煤矿水采
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。
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。
The hydraulic coal driller overcomes the weakness of the coal electric driller,it depends on the motive sources of the emulsification liquid pump station of hydraulic prop and turns the hydr... 液压煤钻克服了煤电钻的缺点,它以液压支柱的乳化液泵站为动力源,将液压能以输出转矩的方式转化为机械能,实施钻孔,有小部分乳化液经空心钻杆到钻头,实现湿式打眼,降低粉尘浓度,改善工作环境。