block diagram of system meaning in English

系统框图
系统组成框图

First in chapter 1 , we introduce the block diagram of system ( includes software and hardware ) in contrast with the old system which based on the dos os then we discuss the flow of radar information and the program ? procedure diagram in detail
首先在第一章中介绍了zzc02雷达侦察车系统的总体设计，对照第一代dos版系统对第二代windows版软件功能、硬件框图作了阐述，详细讨论了新一代雷达侦察系统的信息流程及主程序流程。