Thus the utility model is suitable for being used as the filtertube of the well, which ensures the normal use of the well.
因而本实用新型适合于作为水井滤水管，保证水井的正常使用。
2
The design of infiltration ditch contains the obtaining water tube, anti-filter layer, well, pump house and other accessory building.
渗渠工程设计主要包括水平集水管、反滤层、导水管、集水井、泵房和其他附属构筑物等。
3
The determination of diameter and length of tubewellfilter is always a problem not being completely solved for a long time in tubewell engineering from theoretical and practical point of view.