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Nitroglycerin is obtained by nitrating glycerol.是什么意思？

Nitroglycerin is obtained by nitrating glycerol.

硝化甘油是经过硝化丙三醇得来的。

相关词汇
is obtained by glycerol

is

vt.& vi. 是（be的三单形式；n. 存在；

obtained

v. 获得( obtain的过去式和过去分词 )，买到，（规则、制度、习俗等）存在，流

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

glycerol

n. 甘油，丙三醇，醋精；
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