First of all, author makes a general analysis to the Biodegrade principal of biodegradable baseoil base on the term of protect environment.

• 本文从环保基点出发，首先分析了生物可降解润滑油基础油的降解机理。通过大量试验，系统地研究和探讨了含硫添加剂在菜籽油中的极压性能和抗磨机理。