automatic control executive system
concurrency， executive-system
control， executive system
distributed system executive
executive system
经办体系
执行系统
操作系统
执行制度
执行系统虚记忆器
执行系统控制
executive system concurrency
executive system control
executive system function
executive system multiprogramming
executive system of multiprogramming
executive system routine
Executive system Utilities
executive system utility
executive system virtual memory
executive-system utilities
intergrated manufacturing executive system