Geometrically, an open loop is one in which the forming yarns do not cross at the bottom of the loop. In a closed loop, yarn crossing takes place.是什么意思_Geometrically, an open loop is one in which the forming yarns do not cross at the bottom of the loop. In a closed loop, yarn crossing takes place.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句