First,a series of subordination coding rule were listed according to national standard and some industrial standards,the rules were generalized,and the coding algorithm was designed.

Some key factors of the urban road code are designed in detail based on application,such as code object,code granularity,code structure and code attribute.

By means of the AHP theory, the essay divides the comprehensive evaluation indexes of urban transit planning into five categories, respectively including the evaluation on technique, economic benefit, engineering construction, social benefit and environmental influence, and finally, confirms the evaluation index and index subjection degree of each of the five categories.

Metal grating encoder based on three-grating reflection optical system;

The subject relationship between the AM500 shearer malfunction omen and reason is fuzzy,therefore,draw fuzzy mathematic method into shearer malfunction diagnosis,bring forward setting up the fuzzy membership grade method which is based on the history data and expert preferential ordinal number,found the fuzzy diagnostic model,carry out the fuzzy diagnosis on AM500 shearer malfunction in computer.

The membership grade targets of fuzzing mathematics are applied in selecting a first rate mining method from five methods on the mining conditions of gently dip middlings of Jianshan gold mine and the same mining method from abroad for reference .

A new evaluation approach known as the multiobjective synthetical membership grade deviation is discussed,and its application,this paper.