This paper analyses the limit error of temperature check for differential resistance instruments.

And further calculation formula of limited error and calculation and check method of road engineering are proposed as well as the necessity of carrying out the third calibration for total station.

This paper analyzes the closure error and tolerance of the geometrical condition existing in the plane control network,and based on the production practice,introduces some methods and experiences of making the check calculation of the closure error by using EXCEL.

This paper discussed how to properly determine the tolerance to realize the effective inspection in detecting the reliability of known points in GPS network with the method of connecting traverse.

The paper introduced relations between tolerances in different operations,repetition measurement calibration errors and measuring point coordinate system conversion in 3D seismic prospecting surveying.

Wave equation numerical modeling by finite difference method with varying grid spacing.;

Numerical simulation of elastic wave propagation in azimuthally anisotropic media using multi-level finite difference method;

Time-domain 3-D finite difference modeling of the transient electromagnetic field in underground mine.;

Globally optimized Fourier finite-difference migration in offset domain.;

A finite-difference time-domain solution for transient electromagnetic fields;

VTS Finite-difference Solution of A Fick s Sublimation Problem of Liquid Product during Vacuum Freeze-drying;