The function of excitation control system is introduced, the effect of field-forcing function on system stability is mainly discussed in the paper.

Accordingly,emphasis,as a system of the emphatic function of language,includes two sub-systems: intensification and salience The former is concerned with the forceful expression of attitudes,such as affect,judgment,appreciation,obligation,willingness,inclination,etc.

The Enhanced Function of Law on Moral Education in the Perspective of Evil Humanity——Also on the Enlightenment of “Eight Honors & Eight Disgraces”Education;

The salient of recreation function in a city can upgrade the inhabitancy of one city, and also can be a representation of having powerful function to the city- Studying the function of urban tourism, upgrading the intensity of function of urban tourism and promoting the ally and development in one region are new directions to the urban tourism and urban geography.