Rain water pipe through the walls and floor in accordance with the requirements set casing.
雨水管穿过墙壁和楼板按要求设置套管。
Buried depth of rain water pipe should be buried in the frozen line, consideration should be given to the upper part of the load pipeline.
埋地雨水管的埋没深度应在冰冻线以下，应考虑管线上部的荷载。
The two-phase optimization theory was adopted for designing the sewage pipe, and the ground slope consensus method was used for optimization calculation of rain water pipe.
对污水管道采用两相优化理论设计，对雨水管道采用与地面坡度一致法进行优化计算。
After being filtered, the rain water flows into a water-purifying pipe 50 and is discharged by a blow-off pipe 20 connected with the water-purifying pipe.
雨水经过过滤后流入净水管中50，再通过和净水管连接的放水管20排出。
After being filtered, the rain water flows into a water-purifying pipe 50 and is discharged by a blow-off pipe 20 connected with the water-purifying pipe.
雨水经过过滤后流入净水管中50，再通过和净水管连接的放水管20排出。
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