left filter cake layer 残余滤饼层
As the duration of the filter cake layer thickness, increase, resistance increases, filtering the duration of the pressure difference with a straight-line growth.
随着过滤时间的持续，饼层厚度增加，阻力增大，过滤压差随时间的持续呈直线增长。
Because the cake layer is very thin each filter cycle, it can significantly improve the average filtration rate.
由于每一过滤周期内形成的滤饼层很薄，可明显提高平均滤速。
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