部分译文：
In this article, the author firstly introduces the concepts concerned with PCI bus and takes expanding exterior SRAM as an example to discuss the hardware design method of PCI expansion card; then discusses Windows-based WDM driver and its developing method and gives some WDM driver program and application program supporting expansion card; finally analyzes the performance testing results of the card. The main results obtained are stated as below:
稿件名称：PCI总线扩展板卡的设计与实现