and Closed circle test  闭环检查

Closed and Locked  关闭且锁紧

Closed and Locked Circuit  关闭锁紧回路

closed and mortgage  闭口抵押

closed and open condition  封闭与开放

closed and opened loop control  闭环开环控制

closed and pressured fuel system  封密加压燃油系统

closed recycling system  闭式循环回收系统

convex and closed set  凸闭集

hillsides-closed and afforested  封山育林

limited and closed environment  狭小密闭环境

non-empty closed and convex subset  非空闭凸集

Open loop and closed loop  开环和闭环

oriented and closed theorems  有向性与封闭性原理

subsection and closed device  分段关闭装置

the closed recycling wastewater  封闭循环废水

catalyst separation and recycling  橡胶沥青(混凝土); 催化剂分离回收

cold recycling and reclaiming  冷再生

decentralization and recycling  下放和回收