This article investigated the adaptability of all kinds of detergent in different base oil through plate and four ball testing.

 
  • 本文利用成焦板、四球機試驗考察了各清凈劑在中間基和加氫基礎油中的感受性。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan