单词：ethylene diamine
ethylene diamine的用法和样例：
例句
- Research progresses in the reduction of dinitrotoluene for the preparation of toluene diamine were reviewed.综述了二硝基甲苯还原制备甲苯二胺的研究进展。
- A new type of azacrown ether crosslinked chitosan was synthesized by reaction of chitosan with dihydroxy mesocyclic diamine activated by epoxidation.以壳聚糖为原料，与经环氧活化的双羟基中环二胺反应，制备了一种新型的氮杂冠醚交联壳聚糖。
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英语时差8，16