This paper expounds the design principle of the double--defecation-mouth water -saving toilet and the feasibility of this design, introduces the structure of the double--defecation-mouth water-saving toilet, emphatically probes into the theoretical design and calculation of the double--defecation-mouth water-saving toilet including the calculation of brachistochrone curve, and analyzes the working principles and performance of the double--defecation-mouth water-saving toilet.%阐述了双排便口节水马桶的设计原则及该设计的可行性,介绍了双排便口节水马桶的结构,重点探讨了双排便口节水马桶的理论设计计算,包括最速曲线的求取,分析了双排便口节水马桶工作原理及性能。
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