Through this method, the base oil yield is over 45 %, and viscosity index is 100.It contains low sulfur, low nitrogen and low aromatics.是什么意思_Through this method, the base oil yield is over 45 %, and viscosity index is 100.It contains low sulfur, low nitrogen and low aromatics.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句