practical subject
3.Through the analysis of24 major American periodicals on library science published between 1972 and 1996,this paper,from the angles of the quantifies of both the citations and the cited,draws the conclusion that library science apparently proves to be mainly a technical and practical academic subject that has a relativdy limited scope d research,an imperfect theoretical system,and a relatively poor application to other subjcets.
6.The products including the series of BL special cars, the system of wireless digital TV cover network in villages and the system of city emergency command are all gain consistent affirmative and high praise from consumers, coursing of practical handle on the subject such as radio and TV, public security, meteorology and so on.
