primary return air system 一次回风系统
primary return air reheating 一次回风再热
all-air primary return air system 全空气一次回风系统
primary return air conditioning system 一次回风空调系统
conventional primary return air systems 常温一次回风系统
primary air return 一次回风
In these two cases, this paper did some research and practice as below about air conditioning system which is four-pipe water system, pure steams humidification and primary return air system.
鉴于这样双重需要，针对常用的四管制、纯蒸汽加湿、具有一次回风的恒温恒湿空调系统，本文做了如下研究与实践。
参考来源 - 模糊控制技术在恒温恒湿空调中的研究与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
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