The block-correction technique was used to improve the solving of the difference equations system.

Analysis on the gas pressure measurement result revision on the basis of gas loss quantity before bore being sealed;

Substitution and revisionof contour-pattern of downhole drilling motor;

Study on Revision Methods of Middle Line of Body-linking Sleeve;

Three major changes have been made to revise the P index,and some other changes to reflect local conditions.

It introduced the dyeing of ultra-fine acrylic knitted fabric, worked out the technological formulation and condition used to revise and peel off the uneven dyeing through levelling agent AN.

In comparison with data calculated by other methods, the revised method is rather safe.

Modification of Logistic Cycle Model for Water Cut Prediction;

Buckling analysis and modification of stress control index for super high and thin arc dam body;

Discussion on the modification method for defective data of anchor load cells;