光亮油 meaning in English

bright stock

Bright stock refined , high viscosity lubricating oil usually made residual stocks by suitable treatment , such as a combination of acid treatment or solvent extraction with dewaxing or clay finishing
光亮油通常由渣油经加工处理而制成的精炼、高粘度润滑油。加工处理的方式包括：酸处理（或溶剂萃取）脱蜡（或粘土精制）相结合。
Bright stock refined ， high viscosity lubricating oil usually made from residual stocks by suitable treatment ， such asa combination of acid treatment or solvent extraction with dewaxing or clay finishing
光亮油通常由渣油经加工处理而制成的精炼、高粘度微个个润滑油。加工处理的方式包括：酸处理(或溶剂萃取)与脱蜡(或粘土精制)相结合。