Two samples of reed magnesium lignosulfonate (Mg-LS) , molecular weight cut-off (MWCO) 6000 and 20000 respectively, were isolated from a reed bisulfite spent liquor by ultrafiltration.是什么意思_Two samples of reed magnesium lignosulfonate (Mg-LS) , molecular weight cut-off (MWCO) 6000 and 20000 respectively, were isolated from a reed bisulfite spent liquor by ultrafiltration.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句