The design and application of direct-return system water system of air-conditioning system, and the characteristics of self-balancing control valve are discussed.
本文介绍了异程空调水系统的设计、调试方法和在异程空调水系统中应用较多的自力式平衡阀的特性。
2
This paper discusses the direct digital control (DDC) in the air-handing unit of air-conditioningsystem.
本文将讨论空调系统中空气处理机组的直接数字控制（DDC）设计。
3
Hanging airconditioning, Internet access system, the international and domestic direct-dial phone, cable TV and VOD E. such as STAR-shirts.