benzoline
1. With little pollution, the application of the antiknock additive for gasoline can lead the No. 60 benzoline to be changed into environment-friendly gasoline as No. 90, 93 and 97.
利用本发明,可使60号轻质油变为90、93、97号环保汽油。且环境污染小。
2. gum benzolin
安息香树胶