大众传播因素
factor of mass communication
方向图传播因子
pattern propagation factor
(改进)环形反向传播网络
improved) circular ba ck-propagation network
使用与满足传播理论
The Uses and Satisfaction Communication Theory
《生命知识》传播
spreading fact about life
230MHz无线窄带数传
230 MHz wireless narrow band data transmission
230M无线数传
230M wireless data transmission
BP反向传播人工神经网络
BP Back Propagation Artificial Neural Network Mode
BP算法误差反向传播算法
BP algorithm Error Back Propagation Algorithm