Experimental research of the major factors influencing the medium movements in the ball mill

Numerical simulation of the dust movement rule in fully-mechanized coal faces;

Numerical simulation analysis of the movement rules of projectile in soil;

The differential equations of three mass points are derived for different mass relations between them,and their analytic solutions are obtained,by which the movement rule of three mass points are discussed.

The law of motion of underground water in fissured rocks and status quo of the numerica modeling;

The movement parameters and dynamics parameter are discussed starting from the terry mechanism design and the law of motion.

To counter the no continous jerk curve of the general purpose harmonic trapezoidal combinativial law of motion for cam mechanisms, this paper reconstructed the mathematical model of the law of motion on the basis of the continous jerk curve, and remained the advantages of the law of motion.

Similar material simulation study on the mining overburden movement law in steep seam;

A discussion about the movement law of “boot” system;

The study on the sediment\|laden flow movement law in the river bend is very important in many fields of hydraulic engineering.

Taking a certain fuze for example,this paper studies the characteristics of motion of fuze firing device when impacting soft targets with a low speed.

Objective To understand the status quo of sports behaviors of laborers from other areas in Shenzhen as well as factors influencing their regular sports activities and to explore the relations between regular sports activities and physiological indicators.