closed d loop system 闭环系统

closed d cooling system 闭路冷却系统

closed-loop kz-d system 闭环直流调速系统

closed d loop steam system 闭环蒸汽系统

closed d heat supply system 封闭式供热系统

closed d loop cooling system 闭路冷却系统

closed d loop control system 闭合环路式控制系统

closed d cycle reactor system 闭合循环反应堆系统

single closed-loop kz-d system 单闭环调速系统