- The water is infiltrating the gravel bed.
- A stretch of damaged track ran about 150 yards along the accident site, ties ripped from the gravel bed and the rails twisted.
- In the meanwhile, the result also show that the section configuration and near watercourse characteristic has influenced gravel bed load transport rate.
- Biofilm decompose on the surface is the primary removal mechanism.The gravel bed subsurface constructed wetland was used to investigate the removal efficiencies of SS, NH4+-N, BOD5, and PO43-.
- Our constant flow gravel bed system grows lettuce about 20% better than a reciprocal flow.Gravel beds and floating rafts are about 15-20% more efficient than NFT.
- The ancient gravel beds in the suburbs of Nanjng is one of the important types of rock of the Cenozoic era.