The filter pressure drainage and drainage are two ways to manually drain. Manual drainage when the water level below the level reached before the filter must be excluded.
本过滤器排水有压差排水与手动排水二种方式。手动排水时当水位达到滤芯下方水平之前必须排除。
2
The infinity pool overflow drainage system allows for total integration at ground level and provides certain spirituality.
无限的水池的排水系统与地面融合在一起，提供特定的精神享受。
3
Roads should be built above flood level and have adequate drainage.