乙二胺

ethylene diamine的用法和样例:

例句

  1. 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。
  2. 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。

By Jill Moss Broadcast: November 24, 2003 This is Robert Covent with the VOA Special English Development Report. The World Health Organization says it expects two times as many cases of 1)diabetes in

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By Robert Raffaele Washington, DC 08 February 2008 American medical researchers say they are stunned by the results of a major government study on diabetes and heart disease. They hoped to prove that a long-trusted form of treatment for lowering blo

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Scientists have identified a unique genetic mutation in about 10 percent of people with type 2 diabetes(糖尿病) studied in the United States and Europe. The discovery could help some people learn if they are at risk of developing diabetes so they

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This is the VOA Special English Agriculture Report. Companion planting is the idea that when some crops are planted together, they help each other grow. These compatible plants generally have similar needs for nutrients, soil and moisture. Advice fo

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A five-year study aimed at finding ways to reduce some complications of diabetes tried several approaches but failed to reduce the risk of heart attack and stroke. But the study did identify some effective ways to reduce common vision, kidney, and ne

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