Chlorosulfonyl isocyanate is an important raw material for producing cefuroxime ester which is a cef antibi-otics.是什么意思_Chlorosulfonyl isocyanate is an important raw material for producing cefuroxime ester which is a cef antibi-otics.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句