单词p-i-n
X(p, i, n) is the ith element in p that is input into node n, and alpha is the already noted learning rate.
X（p，i，n）是输入到节点n的p中的第i个元素，alpha是已知的学习率。
Breakdown Characteristics of Dielectrically Isolated Lateral High Voltage p-i-n Devices
介质隔离横向高压p-i-n器件的击穿特性
The Modelling of P-I-N Power Diode with Reverse Recovery
P-I-N型电力二极管反向恢复特性的仿真模型