When the special characteristics of the liquid(such as all kinds of high viscosity oil)or the type of contaminant particles make it impossible to use the general filters such as GL1and GL2.

• 针关于一些用GL1、GL2等一般型功滤机皆易以处置的比拟特别的切削液(例如粘性较小各类油种)外的纯量,北京翻译。