The energy eigenvalues of three-dimensional harmonic oscillator and hydrogen atom are solved by using supersymmetric WKB approximate method;the eigenvalue of angular momentum and angular dimension of non-central potential are gained by applying SWKB theory to differential equation of second order including angular coordinate.

Appear a parpiexed when use Heisenberg s uncertainty relation to anyu-lar momenturm and angular coordinate.

Research on the Mathematical Models of Form and Position Errors for Rotary Surface in Rectangular Coordinates;

By introduction of the finite difference method into the Symplectic system of mechanics of elasticity, a Symplectic difference format for plane rectangular coordinates was developed for elasticity problems under stress boundary condition.

This paper proposed an assumption on the basis of the operating characteristic of power systems,then made an improvement on Newton-Raphson power flow algorithm in rectangular coordinates.

Tliis paper states a drawing line process of tlie charging center of airport highroad engineering, and summarizes that it is better for a point s coordinate from polar coordinate to change into right angle coordinate of arc building plane , combine two kinds of coordinate neatly and validate each other.

An algorithm of multi-balance bus based on rectangular coordinate current influx;

This paper deals with application of coordinate rotating transition in design cam contour line and gives some designing examples and its rectangular coordinate expression .

But in fact,this can also be done by rectangular coordinate.

Auto-adaptive Cartesian grid approach for numerical simulating of convection;

Authors design and implement a systematic method for solving a class of geometric constraint problems with theory in distance geometry, which generates fewer equations than using Cartesian coordinate method simply.

The advantages and disadvantages of Cartesian and non-Cartesian coordinate measuring machine were analyzed.