The optimized synthetic route was obtained,and synthesis of asymmetry 1,3,4-oxadiazoles using P(Ph)3 /(Et)3N/CCl4 as dehydration agent was an excellent method.是什么意思_The optimized synthetic route was obtained,and synthesis of asymmetry 1,3,4-oxadiazoles using P(Ph)3 /(Et)3N/CCl4 as dehydration agent was an excellent method.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句