And it is harmful to spin high quality high counts pure rabbit hair worsted yarns. Traditionally, the method of single-tout test is used to determine the process parameters in many enterprises, which causes waste of plenty of manpower, material and time. 传统上许多企业都是采用单啧试纺的方法来确定纺纱的工艺参数与成纱的性能值,耗费了大量人力、物力和时间。