A unit of fineness for rayon, nylon, and silk fibers, based on a standard mass per length of 1 gram per 9,000 meters of yarn.是什么意思_A unit of fineness for rayon, nylon, and silk fibers, based on a standard mass per length of 1 gram per 9,000 meters of yarn.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句