In this paper,the concept of partial order is introduced for application in the comparative evaluation of effects of 14 pesticide residues on water environment, and an Hasse diagram,the schematic result of such comparative evaluation, is obtained.

Using the grey system theory and the vector projection synthetically, a new model for the combat efficiency evaluation and comparison of EW system based on similarity to ideal grey relational projection was put forward.

The link of comparative criticism of ancient Chinese poetry is mainly showed in two systems: one is the scattered application of comparative criticism of the pattern, style, model and theme of portry; the other is the concentrated application of comparative criticism which mainly appeared in the works of Zhong Rong , Zhang Jie, Gao Bing and Wang Shizhen, etc.

The link of Chinese ancient literature comparative criticism mainly shows in two systems: one is in the different literary forms, such as poetry, prose, ci-poetry, drama and novel criticism; the other is the link of concentrated applying, which appeared in the works of Zhong Rong, Zhang Jie, Wang Shi-zhen, Lv Tian-cheng, Qi Biao-jia, Chen Ting-zhuo and Jing Shen-tan, etc.