It is an important basic theoretical study for the relationship between the dig ging machine s dynamic mechanical parameters (torque and feed resistance) and it s influencing factors(drill rotation speed,drill feed speed,soil composition,soi l hardness,soil humidity) and working parts, structural parameters.

Study of the hydrodynamic parameters of ephemeral gully flow is the base of establishing process-based or conceptual water erosion models.

Flow pattern and hydraulic parameter characteristics in hillslope-gullyslope system

The pressure in discharge port and the rotation speed of the shaft are both the main hydraulic parameters of the centrifugal pump.

VOF model can simulate air distribution of discharge conduit bottom slab,but cannot compute quantitatively aerated hydraulic parameters (such as wind speed of air shaft and negative pressure of cavity pocket) so that the design of air shaft must depend on physical test results.

Calculation of TLP s hydrodynamic parameters;

By analysing the geomentry of sandbodies ,the sedimentary sequence,the hydrodynamic parameters and the shap.

The statistical capability of Kalman estimation method for latitudinal movement of ship is studied,when its hydrodynamic parameters fluctuate around criterion value at random after the proportional distributing.