磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
电力牵引供电系统电源
power supply from electric traction feeding system
电系统电压变动
electrical system voltage variation
铁路电务系统
Railway Telecommunication and Signaling Department
railway telecommunication department
微机电系统电镀
microelectro-mechanical system plating
测报业务系统
forecasting operational system
实时业务系统
real time operational system
世界天气监视网业务系统评价
Operational WWW Systems Evaluation