The application of coordinate rotation command in the NC finish machining of elliptic surface;

Based on the characteristics of 3C seismic data, the paper carried out the practical study of several key techniques in 3C converted wave seismic data processing, including coordinate rotation of horizontal component of converted wave, computation of common converted point (CCP) of converted wave, static correction and residual static correction of converted wave, iterativ.

We have researched a method of coordinate rotation of 3D converted wave data, binning and calculating 3D converted point, that is to make coordinate rotation for all seismic traces in each gather of converted wave common-shot point.

Physical model and mathematical model of doubly-fed brushless machine based on slip frequency rotary coordinate system;

On this basis,the method of identifying the direction of rubbing force is put forward,this method projects the component of impulse response in the orbit of rubbing rotor to the rotating coordinates which is defined by initial phase,and the.

In the rotating coordinates, a general model of continuous rotor system is established based on the Euler Lagrange equation.

To simulate and calculate "the aero-optical transfer effects", an infrared imaging model was presented for applying the coordinate conversion method to trace any light in the space to figure out "the Optical Transfer Function (OTF)" and "the images".

The circular Jones vector′s transformation in coordinate conversion was presented by using Cartesian Jones vector′s transformation in coordinate conversion.