本文在分析羊毛细化技术产生机理与意义基础上，通过羊毛拉伸改性前后的红外光谱分析等方法，研究了拉伸改性处理对羊毛纤维结构、细度......

Back-Propagation (BP) neural network and its modified algorithm are introduced. Two series of BP neural network models h......