Terms containing two-level system

Subject	English	Chinese
tech.	two-level building operational system	双层施工体系
tech.	two-level energy system	二能级系统
tech.	two-level nonreturn system	双位无回程系统
tech.	two-level return system	二级归零记录系统
tech.	two-level return system	双级归零记录系统
tech.	two-level return system	双位有回程系统
el.	two-level system	二能级系统
mater.sc.	two-level system model	双能级模型
el.	two-level tunneling system	二能级隧穿系统