The paper sums up purifying practical method of 4-amino antipyrine,compares it with classic method and points out benefit of usirg chloroform as extraction agency.是什么意思_The paper sums up purifying practical method of 4-amino antipyrine,compares it with classic method and points out benefit of usirg chloroform as extraction agency.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句