The double lift pipe catalytic cracking process and apparatus for modifying inferior petrol in petroleum processing aims at reducing the olefin content and sulfur content in petrol greatly.

本发明公开了石油加工过程的一种改质劣质汽油的双提升管催化裂化方法 及装置，主要用于解决采用现有技术所生产的汽油烯烃含量或硫含量下降幅度 不大的问题。

youdao

Subsidies make up part of the shortfall: water is sold for 5% of what it costs to pipe it, petrol at 11 cents a litre, and 40% of Libyans don't bother to pay for their state-supplied electricity at all.

ECONOMIST: Libya