And California has adopted a low-carbon fuel standard that will require oil companies to cut the carbon content of their petrol.
而且加州已经通过了低碳燃料标准，要求石油公司降低他们汽油中的含碳量。
2
As the alkene content of motor vehicle petrol containing catalytic fraction is large, it is difficult to measure accurately by the fluorescent indicator adsorption method.
含催化馏份的车用汽油，烯烃含量大，用荧光指示剂吸附法不易测准汽油的族组成。
3
The present invention is used mainly for modifying inferior petrol and can reduce greatly the olefin content and sulfur content in petrol simultaneously.