該淨水排水管的管壁設有阻擋該輕質過濾砂進入只容許淨水流入該淨水排水管的

該淨水排水管的管壁設有阻擋該輕質過濾砂進入只容許淨水流入該淨水排水管的多數網孔或篩網。

結果 (英文) 1:

The clean water drain barrier wall provided with the light filter allowing only clean water into the sand flows into the majority of a mesh or screen clean water drain.

結果 (英文) 2:

The pipe wall of the water purification drainage pipe is provided with most mesh holes or screens that prevent the light filter sand from entering the water purification pipe only. ...

結果 (英文) 3:

The pipe wall of the water purification drainage pipe is provided with a plurality of meshes or screens to prevent the light filter sand from entering the water purification drainage pipe.