基本解释制備同根派生 Preparatlon相关词英汉例句In this paper,the preparatlon and application in medicine and pesti-cides etc. of chloroacetyl chloride and its derivatives were briefly described. 介紹了氯乙醯氯及其系列衍生物的研制及在辳葯、毉葯等領域的應用概況。sol-gel preparatlon sol-gel法制備Preparatlon更多例句