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.