hierarchical file system
the file system for engineering inspection
executive system
执行系统
执行制度
执行系统控制
执行系统虚记忆器
操作系统
经办体系
Manufacturing Executive System
positive list system system
7-year system switching to 8-year system
Accounting environment Accounting theoretical system Accounting standards system
bridge transformed from simple-supported system into continuous system
cardiovascular system and cerebrovascular system
C-band unified TTC system and C-band mono-pulse measuring radar system
CF system core flooding system
changing oil system into coal system
emulating system for jacking system
free air temperature increased system FATI system