In spinning,the front set rotates about30 times faster than the back set. This difference in steed attenuates the yarn and makes it even, smooth and uniform.是什么意思_In spinning,the front set rotates about30 times faster than the back set. This difference in steed attenuates the yarn and makes it even, smooth and uniform.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句