The circulation of materials is pushed by a big flow and low-lift axial flow pump.
料浆的循环靠大流量、低扬程的轴流泵推动。
2
It is shown after analysis that the efficiency of roto-jet pump is higher than theefficiency of multistage pump and express pump when it operates in the region of low dis-charge and high lift.
Because of these low-lying areas water lift is not high but the irrigation or drainage water a considerable loser should adopt a "low-head large flow" performance characteristics of axial flow pump.