Through the analysis of the water environment influenced by the mining coal, the effective methods to decrease effect on water environment are put forward.
通过大同地区采煤对水环境的影响分析，寻找出降低对水环境影响的有效方法。
Through microscopic analysis of XRD and infrared spectra, when calcium ion is replaced by lithium ion, the lattice spacing of bentonite and the water molecule number in the structure decrease.
经xrd和红外光谱的微观分析，当锂离子置换钙离子后，膨润土的晶格间距减小，结构中的水分子减少。
The decrease of water area and plantation made many resident birds can not find a place to live through the winter.
水域面积、植被覆盖率的减少，使栖息和越冬鸟类丧失了大量的栖息地。
Polymer flooding can enhance the oil displacement efficiency through enhancing the water-out degree. But it is very difficult to decrease the waterflood remaining oil.
可通过提高水洗程度来提高驱油效率，但降低水驱残余油的难度很大。
Polymer flooding can enhance the oil displacement efficiency through enhancing the water-out degree. But it is very difficult to decrease the waterflood remaining oil.
可通过提高水洗程度来提高驱油效率，但降低水驱残余油的难度很大。
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