第一级掌握液压元件的污染虚与抗污染能力液压元件已成为液压油污染的根源。各种液压元件污染物的一般标准采用如下等级,且示于表1。抗污染能力的一般标准采用如下 The first level to master the hydraulic components of the pollution and anti-pollution ability Hydraulic components have become the root cause of hydraulic oil pollution. The general criteria for contamination of various hydraulic components are as follows, and are shown in Table 1. The general standard for anti-contamination is as follows