应提供一个软管以便在断电时用自来水冲洗循环管路。
A flexible hose should be provided to flush the circulation line with city water, in case of a power cut.
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。
Solar hot water system mainly components including collector, storage device and the circulation line three parts.
系统主要包括四个部分：机架、循环管路、紫外线消毒器和自动控制装置。
There were four main parts in this system, which were the frame, the recirculation pipeline, the ultra-violate disinfection apparatus and the autocontrol instrument.
应用推荐