primary and secondary water system
primary and secondary water system
一次和二次水系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Presents the air conditioning system and smoke exhaust system design of this project, applies the primary air fan coil system and secondary pump water system in the Top Electronics City.
简要介绍了鼎好电子商城空调系统和防排烟系统的设计，商城采用了风机盘管加新风空调系统和二次泵空调水系统。
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