【摘要】 本文用逐步回归方法,分析了三种纯棉细纱的黑板条干品级与电容式纱线均匀度仪指标间的关系,得出在目前采用的仪器指标中,20厘米片段内不匀变异系数(20厘米)与其他几项指标相结合能够较好地反映纱条的黑板条干品级,但仪器与黑板两种指标并不能完全对应的结论。更多还原

【Abstract】 The authors analyse the relationship between the yarn evenness grades by blackboard method and electric condenser type evener for three kinds all cotton yarn, using stepping regression method. However, it was shown that the coefficient of variation of evenness within the length of 20cm. got from the instrument in combination with several other indices could well correspondwith yarn evenness grades by blackboard method, but the data from blackboard and those from an instrument might not well agree with each other.更多还原