primary return air system 一次回风系统
secondary return air system 二次回风系统
return air system 回风系统
return air duct system 回风管道系统
all-air primary return air system 全空气一次回风系统
centralized return air system 集中回风
Based on the characteristics of heat and moisture loads in cleaning operation room, the non-reheated and fixed secondary air return system was analyzed in the situation that loading changes.
从二次回风空调系统的节能分析，正压控制，医疗建筑废热、废水的再利用，运行管理等方面探讨了减少洁净手术室空调系统能耗的途径和方法。
Presents the application of fuzzy control technique to the secondary return air system of a symphonic concert hall.
介绍了模糊控制技术在一交响乐厅二次回风空调系统中的应用。
The job of the air conditioning system is really to "remove" the heat that makes us uncomfortable, and return the air to the car's interior in an "un-heated" condition.
空调系统的作用是将令人不舒服的热量“带走”，同时在寒冷的时候将热量返送到轿车内部。
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