The purpose of polymethylene polyphenyl polyamines purification system is to get rid of anilin and water.The stripping tower and drying tower are two main separation units in the system.是什么意思_The purpose of polymethylene polyphenyl polyamines purification system is to get rid of anilin and water.The stripping tower and drying tower are two main separation units in the system.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句