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 development of personnel has certain help.