An efficient method to rectify the distortion which exceed the acceptable standard of one hundred thousand cube meters tank's soleplate was introduced in the text.

This paper introduces the repair technique for nickel-aluminum bronze propeller and gives probe in detail to rectify and weld-mend to the propeller.

According to the teaching practice for many years,the psychology of disliking study to the "lagging students" during the time of studying in primary and secondary school and rectifying measurements are discussed.

Control and rectification of the marine welding deformation;

A rectification experiment on iron-deficiency chlorosis of mango resulted fro excessive lime application;

The Research about Rectification Algorithm of HDB_3 Signals on the Long-line Transmission Systems;