造一个房屋给排水系统的模型。

Build a model of a house water and drain system.

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最后将其与同时期的洛阳城给排水系统进行比较，了解其中存在的不足。

Last, it with the same period of Luoyang City compared to understand shortcomings.

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通过对真空排水系统的介绍，给大家一个全新的设计思路。

Through the introduction of vacuum sewerage system, the new design idea was given.

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通过对真空排水系统的介绍，给大家一个全新的设计思路。

Through the introduction of vacuum sewerage system, the new design idea was given.

youdao