After reducing the dosage of PVA, the size mixtured with guar gum was used for sizing and the performances of the yarn thus sized were tested.是什么意思_After reducing the dosage of PVA, the size mixtured with guar gum was used for sizing and the performances of the yarn thus sized were tested.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句