Clean the fiber ends with lint free lens tissue moistened with pure isopropyl alcohol. 用纯异丙醇酒精沾湿的不起毛的镜片纸巾加以清洁光纤端点。
The conditions and results of the reaction of diketene with isopropyl alcohol in the presence of different catalysts are discussed and some experimental data are provided. 就双乙烯酮与异丙醇在不同催化剂下反应生成乙酰乙酸异丙酯的条件及结果进行了讨论，并提供了实验数据。
美
