The application of new technologies solves the problem of dust contamination, increases the purity of molten iron and improves the automatic control to the furnace.
新技术的应用有效地改善了粉尘污染问题，提高了铁水的纯净度，提高了设备自动化控制水平。
A considerable portion of electric contact failure is caused by environmental factors, of which dust contamination is an important factor on electric contact reliability.
在电接触故障中，由环境因素导致的占了很大一部分，其中尘土污染是影响电接触可靠性的一个重要因素。
Sanitary conditions are controllable within a dehydration pant, whereas in open fields contamination from dust, insects. birds and rodents are major problems.
脱水工厂内部的卫生条件是可以控制的，而在旷野上，受灰尘、昆虫、鸟类和齿动物污染是主要问题。
Port facilities construction and renovation contribute to surface and ground water contamination and air pollution from asbestos, lead-based paint, dust, sediments, PCBs and petroleum hydrocarbons.
港口设施的建设和改造，而造成地下水污染和对空气的污染是来自石棉、含铅的油漆、灰尘、沉淀物、多氯联苯、石油碳氢化合物等。
Outdoor transmission line and substation electrical equipment often suffer from industrial contamination or natural salt, dust, bird droppings and other contamination.
输电线路和变电站的户外电气设备经常遭受到工业污秽或自然界盐碱、飞尘、鸟粪等污染。
Outdoor transmission line and substation electrical equipment often suffer from industrial contamination or natural salt, dust, bird droppings and other contamination.
输电线路和变电站的户外电气设备经常遭受到工业污秽或自然界盐碱、飞尘、鸟粪等污染。
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