英语语法分析

The concentration of carbenium ions plays key role in the hydrogen transfer ability of olefins.

正碳离子浓度对烯烃的氢转移反应起决定性作用。

Carbenium ion is an active intermediate state in organic reactions, which has been investigated for over 100 years.

正碳离子是有机化学反应过程中一种活泼的反应中间体，对于它的研究已经有100多年的历史。

High catalyst to oil ratio mainly leads to carbenium ion catalytic reaction, which LPG and coke yields were remarkably increased but dry gas yield was basically unchanged.

由剂油比增加引起的过裂化属于过度催化反应，过裂化点后液化气和焦炭产率出现明显增加的趋势，但干气产率基本上没有变化。