After improvement, the hot water circulation system was rationally collocated. Meanwhile, good profits were received.
通过改进，热水循环系统得到合理的配置，并获得很大的经济效益。
The safety design of gas supply system, hot water circulation system, alarm system and so on in atmospheric gas hot-water heating boiler room is discussed.
探讨了燃气常压热水供热锅炉房燃气供气系统、热水循环系统、报警系统等的安全设计。
Solar hot water system mainly components including collector, storage device and the circulation line three parts.
太阳能热水系统主要元件包括收集器、储存装置及循环管路三部分。
Volcanic process, which has stimulated and strengthed the extraction by hot water circulation, is a strong and stable dynamic system for the formation of the Yindongzi deposit.
火山作用激发和强化了地壳内的热水循环萃取过程，同时也是银硐子矿床形成的强烈且稳定的动力系统。
Therefore, this conclusion should be taken into account when we study how to select one circulation pump with reason in a hot-water supply system.
管段流量与终点水温的关系，是热水供应系统中循环泵选择计算研究的一个重要理论依据。
Thermal characteristics of the gravel layer in the system heated by hot water natural circulation with solar collector were studied.
对由太阳能集热器热水自然循环加热的太阳能热转换系统卵石层的热特性进行了实验研究。
Based on the monostable circuit, using the IC NE555, a kind of hot water circulation automatic heat preservation system was designed.
利用时基icNE555接成的单稳态电路，设计了一种热水循环自动保温系统。
Based on the monostable circuit, using the IC NE555, a kind of hot water circulation automatic heat preservation system was designed.
利用时基icNE555接成的单稳态电路，设计了一种热水循环自动保温系统。
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