At the same time, smoke from burning coal and all kinds of dust are also important factors.
同时，煤炭燃烧的浓烟和各种各样的灰尘也是重要的因素。
Research on the integrated desulphurization technology of blowout calcium and water bath and its device for purifying smoke gas from coal-burning was performed.
在实验测试基础上，对燃煤烟气喷钙水浴复合脱硫工艺及设备进行了研究。
In light of the natural gas production regions, there is severe air pollution in Lanzhou and Xining, especially the smoke pollution emitted from coal burning.
而从天然气消费区来看，兰州和西宁两市大气污染严重，均为煤烟型污染。
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