As a conclusion, the reasons of vibration are that the oil-seal ring create friction and axles flutter exceed standard.
介绍了大型汽轮发电机组密封瓦振动的机理,经试验分析认为产生振动的原因是密封瓦碰磨、大轴晃度超标。
Among the cities which exceed standard of the air quality, 68% of them exist the problems of inhalable particulates pollution.
我国空气质量超标的城市中,68%都存在可吸入颗粒物污染的问题。
Whereas the process flow of small high efficiency oil removal device requires higher using condition and after filtation the water quality is easy to exceed standard.
而小型高效除油设施体积小,占地面积少,但要求污水含油量在平稳状态下运行,处理后的水质容易超标准。
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