Moreover, We found that the relaxation time of H2TPP with donating electron group is about 7 times faster than that with withdrawing electron group.
另外，还发现推电子基团取代的卟啉弛豫过程比吸电子基团取代的卟啉弛豫过程快7倍。
The electron withdrawing group (F) being introduced into the alkyl groups of then-hexyl ZDDP is able to strengthen chemical adsorption between ZDDP and Fe atoms.
在伯烷基上吸电子基团能增强硫原子与铁原子之间的化学吸附作用力。
The dinitrobenzene with electron-withdrawing group can be hydrogenated much easier than the dinitrobenzene with electron-donating group.
含有吸电子基团的二硝基苯类化合物反应活性明显高于含有供电子基的二硝基化合物的加氢反应；
Due to the strong electron-withdrawing property of CF3 - group the substitution of ortho-chloro shows a higher probability, implying the in-principle feasibility of the reaction.
由于此物质中CF 3具有强吸电子能力，所以其邻位的氯更易被取代，这就说明此反应理论上是能够发生的。
Due to the strong electron-withdrawing property of CF3 - group the substitution of ortho-chloro shows a higher probability, implying the in-principle feasibility of the reaction.
由于此物质中CF 3具有强吸电子能力，所以其邻位的氯更易被取代，这就说明此反应理论上是能够发生的。
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