The conversion of dihydrosafrole in chloromethylation was 97.7% empolying compound A as phase transfer catalyst.The product was analysed by infrared spectrum.是什么意思_The conversion of dihydrosafrole in chloromethylation was 97.7% empolying compound A as phase transfer catalyst.The product was analysed by infrared spectrum.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句