In the view of pollution, the hydraulic system and its components were classified, and the whole process of anti-pollution was separated.
从污染角度，对液压系统及其组成进行了分类，并对预防污染的全过程进行了阶段划分。
In the view of pollution, the hydraulic system and its components were classified, and the whole process of anti-pollution was separated.
从污染角度，对液压系统及其组成进行了分类，并对预防污染的全过程进行了阶段划分。
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