As the succession of the former part, this part mainly discussed the practical ways to evaluate the possible flaws in W-Cu composite through multiple echo method and normal scanning beam testing method by using reference blocks.

This study proposes a shift to emphasizing macro languages comparison,which aims to expose to students .

We investigate the effect of patchy contrast on intraclonal division of labor and test the hypothe.

Firstly the original image is divided into several macro blocks in the light of certain size,and macro block within each row are permuted.