system low系统低级systemn.系统；体系；身体；制度system calling sequence系统调用序列system services program系统服务程序system data acquisition系统数据收集system generation macro宏系统生成令System Program Director系统程序控制器system macro definition系统宏定义system residence device系统常驻设备system interface design系统接口设计system dynamic analysis系统动力学system protection valve系统保护阀

1. A various kind of service function elements and males of SU were described.Furthermore, the DMCS's the micro-communication element system architecture based on the SU was proposed.
   对其中的服务功能元素和服务元模型进行了描述，并给出了基于服务元的分布式测控系统微通信元系统构架。