ISO 12925-2:2020 润滑剂、工业用油和相关产品(L类).C族(齿轮).第2部分:CKH、CKJ和CKM类规范(开式和半封闭齿轮系统润滑剂
Lubricants, industrial oils and related products (class L) — Family C (gears) — Part 2: Specifications of categories CKH, CKJ and CKM (lubricants open and semi-enclosed gear systems)