The pullulan aminoalkyl ether according to claim 1, wherein the pullulan aminoalkyl ether is in a form of a quaternary alkylamine salts.是什么意思_The pullulan aminoalkyl ether according to claim 1, wherein the pullulan aminoalkyl ether is in a form of a quaternary alkylamine salts.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句