It is difficult to obtain path information in the supply and demand relationship between sources and flows of electric power network according to the basic electrical principles and laws.
如何从基本电气原理和规律出发求解电力网络源流之间发生电气供求关系的路径信息，是一个有待解决的难点问题。
With the growing of China's electrical energy demand, utilization of coal-bed methane in power generation has drawn increasing attention.
伴随着中国电力能源需求的不断扩大，利用煤层气发电越来越引起人们的广泛关注。
Increase in demand of polyurethane composites from the transportation, building & construction, electrical & electronics, wind power energy industries propelling the growth of this market.
来自运输、建筑&建设、电力 &电子、风力发电产业的聚氨酯复合材料需求扩大，促进该市场的成长。
Energy saving and emission reduction is one basic demand in electrical power industry; it is also one important item in the project assessment.
节能减排是电力行业的一项基本要求，属于考核范围的重要项目之一。
Energy saving and emission reduction is one basic demand in electrical power industry; it is also one important item in the project assessment.
节能减排是电力行业的一项基本要求，属于考核范围的重要项目之一。
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