下供下回异程式系统
The direct return up-feed vertical two-pipe system Hydraulic balance
闭式双管异程系统
Closed-loop double pipe direct return system
分布式系统程序
distributed system program
DSP
符号程式系统
alternating current single phase two wire insulated system
均齐方程式系统
System of homogenous equations
嵌式系统程序设计
embedded systems programming
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system