Spinning machine - a laboratory sample spinning machine for producing single and two fold yarns of appropriate count for subsequent knitting to produce sample swatches for washing testing in accordance with iws tm31 纺纱机此实验室样品纺纱机生产适合支数（号数）的单纱和双合股线，为了后来的针织生产出样品布，依照国际羊毛局技术手册31进行耐洗试验。
