闭路电视系统
closed circuit TV system
closed-circuit television
closed-circuit television system
closed-circuit TV
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
地面数字电视系统
terrestrial digital TV 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
反雷达和电视导引飞弹
missile anti-radar and television (Martel