Two systematic errors easily neglected in the determination of suspended substances and their elimination;

Limit and elimination of systematic errors in the physics experiment;

Adaptively robust filter based on synthetically fitting systematic errors and covariance matrices;

The error is always ineluctable in each measurement This text gives respectively the general formula about the systemic error and the random error,also gives the transfer formulas in special conditions ,and introduces their application technique by an example At the same time,it explains the transformation between the systemic error and the random erro

The systemic error of the resonance base frequency existing in dynamic Young module′s experiment is analyzed, and the cause of this type error is found that resulting from the difference between the theoretical model and the experimental restraint conditions.

According to the generation,classification and connotation of dynamic tracking systemic errors,by setting up the mathmatic model of dynamic tracking,combined with drawing,the article analyses deeply the reasons with cause the dynamic tracking systemic errors of some model of small caliber anti-aicraft gun differing from the test results of field test.

On the method of reducing the system error in measuring the naphtha lene's mole cular weigh by reducing the solidifying point method;

The Analyzing for the Generation of the System Error and Elimitating Methods;

Two ways of correcting system errors;

Then,the basic reasons of causing system errors are found out by the experiment contrast.

Through analying the causes of generating system errors in the electric measurements,the paper puts forward the ways to eliminate the errors.

However, there are several facets, such as the compaction method, the measuring precision, and the density conversion for calculating the voids in coarse aggregate, which could cause system errors.