我们平常做的基于一定硬件的二次开发，一般会先安装驱动程序(DRV)和用户接口的运行库(DLL)，然后在此基础上开发出我们的应用程序(APP)。-we normally do on a certain hardware in the secondary development, they will install driver (DRV) and the operation of the user interface library (DLL). Then on the basis of the development of our applications (APP).