service observation meaning in English
业务观察
业务检查
Examples
- Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators - specification for the procedure for in - service observation of pbxs undergoing type approval
连接由某些公共长途电话接线员操作的专用分组交换机.第7部分:型号审批过程中专用分组交换机使用观察的程序规范