论文综述了其社会经济效益、实现原理、关键技术、组成、现状与发展趋势。
In this paper its society benefit, economy benefit, principle, key technology, system constitution, current status and development trend are surveyed.
由于拉萨市地处青藏高原，独特的自然环境、气候条件和社会经济条件决定了拉萨市大气污染现状和其它城市的不同之处。
Lhasa city lies on the Qingzang altiplano which has unique nature environment, climate and social economy. So its air pollution status is different from other city.
在所设计的四种情景模式中，对水资源利用现状、不同政策取向所引起的水资源分配变化及其对项目区社会经济及环境的影响，从数量上进行了模拟对比分析。
The current situation of water use in the survey area, the impacts of different policy orientations on social economy and environment have been simulated under four scenarios.
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