Research purposes:The main measurement work in slab track construction is to adopt the necessary measuring instruments to measure the track geometrical sizes based on the track design parameters and the CPⅢ control points with fine-turning measurement methods for the purpose of guaranteeing correct track geometry.

The factors affecting the measuring accuracy of natural gamma while drilling.;

Analysis and Improvement of Command Factor Measuring Accuracy for a Missile;

The temperature effect on the measuring accuracy of a magnetostrictive liquid lever sensor;

Improvement of measurement accuracy in testing the residual stresses in auto-frettagea tube;

Influence of background scattering on measurement accuracy of laser radar cross section;

The factors of impacting the X-ray thickness measurement accuracy and methods to maintain

Study on measure precision of γ-ray level meter;

The size error of internal measure-hand in number-showing calipers and some factors to affect its measure precision were analysed and some suggestions were put forward to perfect further standard and checking procedures.

In accordance with the affection of transformation quantity of measured force on its precision,the improving measures were put forward,then the measure precision was raised,the inspection request of fine products was satisfied.