... composition of petroleum 石油的成份; 石油的组成 consumption of petroleum 石油的消耗; 石油消耗 cracking of petroleum 石油裂化 ...
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The basic studies on catalytic cracking of petroleum fractions made at the Department of Chemical Engineering of East China Petroleum Institute during the last thirty years are reviewed in this paper.
本文回顾了近三十年来华东石油学院炼制系所做的有关石油馏份催化裂化的基础研究工作。
The olefins, such as ethylene and propylene, are formed from petroleum gas or from cracking of larger hydrocarbons. Ethylene is used to make polyethylene e.g.
烯烃主要是来自石油气或大分子的碳氢化合物裂解，如乙烯，丙烯。
The progress of polymeric modification technologies for cracking C5 petroleum resin were reviewed.
综述了裂解C5石油树脂的聚合改性技术进展。
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