The major influencing factors of blending coker naphtha for 90 RON unleaded gasoline are its distillation range, octane number, existent gum and mercaptan content.是什么意思_The major influencing factors of blending coker naphtha for 90 RON unleaded gasoline are its distillation range, octane number, existent gum and mercaptan content.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句