Influence of Emulsification and Chain Extension Techmology on Cationic Aliphatic Aqueous Polyurethane Emulsion and Its Performance of Coatings Film是什么意思_Influence of Emulsification and Chain Extension Techmology on Cationic Aliphatic Aqueous Polyurethane Emulsion and Its Performance of Coatings Film在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句