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什么是坐便器坑距，坑距是多少？

下排水坐便器的坑距：坐便器排水口中心到完成墻面之間的距離
后排水坐便器的坑距：坐便器后排水口中心到完成地面之間的距離
下排水坐便器的坑距一般有：305mm，400mm，200mm
后排水坐便器的坑距一般有：100mm，120mm，180mm
（具體坑距以產品圖紙為準）

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