收放系统
deployment system
launch and recovery system
自动收放系统
automatic retractable system
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
无限维离散系统系统
Infinite dimensional discrete time systems
共用系统双工区
GSDA Global System Duplex Area
钼系双11系列化合物
complexes of double-11 scries containing molybdenum
数控系统双键盘控制器
The double keyboard controller of NC system