城里甚至还敷设了排水系统,因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。
The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
介绍了系统的布置方法及回水管的几种敷设形式。
Presents the arrangement method of this system and layout types of its return pipes.
该系统比较适合于旧供暖系统的改造。介绍了系统的布置方法及回水管的几种敷设形式。
This kind of system is suitable for reform of old systems. Presents the arrangement method of this system and layout types of its return pipes.
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