Conservation of momentum s theoritical calculate to electrical and magnetism field from a sham false question;

Measurement and Analysis on Momentum of Spray of Diesel Engine;

Thrust computation of waterjet propulsion system based on momentum flux method and CFD code;

Acording to Landau-Lifshitz prescription of energy-momentum of gravitation field,the concrete forms of energy-momentum densities and angular momentum of cylindrical gravitational waves of the double polarized states have been obtained in Cartesian coordinates system.

Under the framework of the Vierbein representation of the local Lorentz group gravitational gauge theory, the exact expressions of the energy momentum and the power flow density and total radiation power of the exact cylindrical gravitational waves of Einstein and Rosen are given in this paper.

The transformation properties of the gravitational energy momentum in the teleparallel gravity are analyzed.

Characteristic analysis of the aerodynamical roughness and the momentum flux in the southern coast of Bohai Sea;

The results reveal that the power spectrum curve in the inertial subrange for the forest CL can be expressed by a power law, but the power exponential is less than -2/3; turbulent scale in the forest CL tends to decrease; the dissipation coefficient in the upper forest CL is greater than that in the lower forest CL; momentum and momentum flux decrease with the in.