;
烯;
;The method and the condition of separation epoxy ethane from dihydric alcohol are discribed.
介绍了环
与二元醇的分离方法和条件。
The method and the condition of separation epoxy ethane from dihydric alcohol are discribed.
介绍了环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、、异丁和异戊。
The oxidative dimerization of aryl methanes in organic solvents by using alkaline catalysts is an important way to prepare diphenyl ethanes and diphenyl ethylenes.
芳基甲在有机溶剂介质中、碱催化下的化缩合反应,是合成二苯烯()类化合物的重要途径.
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