FGD (Fume Gas Desulfuration) is only cosmically commercial desulfuration type in the world. It is dominating technology measure to control acid rain and sulfur dioxide pollution.
烟气脱硫是目前世界上唯一大规模商业化应用的脱硫方式，是火力发电厂控制酸雨和二氧化硫污染的主要技术手段。
The result shows that there has been one type (or one grade) of every landscape factor which is dominating over the area of surrounding region of each city.
结果表明，在大多数城市周边地区，各侵蚀景观因子都有一种类型(或级别)，其面积分布系数较大，居支配地位。
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