该文档是关于三极管型号的具体介绍的，不是啥代码。其中对常见的三极管如9013 8050等有具体的描述。对电子开发人员有一定的帮助。-This document is about transistor type the detailed introduction of, not what the code which the common transistor is like 9013 8050 etc have specific descr iption of electronic develo