果味酸柯林斯词典

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果味酸柯林斯词典

常见例句

  • Two methods for preparing crystallised dintroglycoluril (DINGU) via.recrystallization from nitric acid or nitration of glycoluril in mixed acid of HNO_3-H_2SO_4 were investigated.
    介紹了用硝酸重結晶及用硝硫混酸硝化甘脲直接制備二硝基甘脲晶躰的方法及用二甲基亞碸制備二硝基甘脲晶躰的結果。
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