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1·Presently, there are two methods of desanding of heavy oil at home and abroad, i. e. gravitational settling desanding and hydrocyclone desanding.

目前国内外解决稠油除砂的方法主要有两种：即重力沉降除砂和旋流除砂。

2·The precipitator is the dust removal installment used the element of the dust pellet gravitational settling function which rests from the gas separates.

沉降室是利用粉尘颗粒的重力沉降作用而使粉尘从气体中分离出来的除尘装置。

3·Indoor test shows that the microwave dehydration is superior than the method of gravitational settling, Chemical or heating dehydration in speed and efficiency.

室内试验表明，微波脱水速度之快、效果之好，是重力沉降、化学脱水和加热脱水方法所不能比拟的。

4·The gravitational settling, flocculating and condensation, the theory of filtering, flushing and dewatering , the property of medium have been studied in detail also.

对重力沉降、絮凝与凝聚、过滤理论、洗涤与脱水及介质的性能进行了详细分析。

5·The theories of Dick and Coe-Clevenger were applied for design of gravitational sludge thickeners in waterworks based on the settling curve obtained by static settling experiment.

根据实测得到的静态沉降曲线讨论迪克理论和柯伊-克里维什理论在给水厂污泥重力浓缩池设计中的应用。