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US3974528A Sewage system with reusable flush medium 失效
污水系统采用可重复使用的冲洗介质

Sewage system with reusable flush medium
摘要:
A sewage system in which the transport medium or flush medium is a liquid having a specific gravity less than that of water. The flush medium after transporting sewage waste to a tank or the like thereafter separates from the sewage and floats on top of it becoming available for reuse.
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