;
;The method and the condition of separation epoxy ethane from dihydric alcohol are discribed.
介绍了环
乙
与二元醇的分离方法和条件。
】乙乙The method and the condition of separation epoxy ethane from dihydric alcohol are discribed.
介绍了环乙与二元醇的分离方法和条件。
There is more methane,ethane, isobutane and isopentane in shaly limestone than in marlite.
泥灰岩比纯灰岩所产气体中含有更多的甲、乙、异丁和异
。
The oxidative dimerization of aryl methanes in organic solvents by using alkaline catalysts is an important way to prepare diphenyl ethanes and diphenyl ethylenes.
基甲在有机溶剂介质中、碱催下的缩
反应,是成二苯乙烯()类
的重要途径.
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