The waste paper stock was used to study the effect of the dosage and sequence of PEO and PFR on retention as well as that of themolecular weight of PEO on it.是什么意思_The waste paper stock was used to study the effect of the dosage and sequence of PEO and PFR on retention as well as that of themolecular weight of PEO on it.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句