A sufficient and necessary condition in terms of the compactness of super-distance space is given based on the property of super-distance space and the related theory of compactness.

By the property of the super-distance space and the connectedness of topological space,we obtained that all of the super-distance space its subspaces and product spaces are neither connected spaces nor arcwise connected space,meanwhile the super-distance space which isn t discrete topological space isn t partially connected space.

The property of a class of special distance space called super-distance space is studied,including its spherical neighbourhood,cauchy sequence,connectedness,completedness, etc.

Electrostatic dust precipitator with super wide clearance and long discharging bar and parameter identification;

Research purposes: Based on the examples,the ideas are expressed on the problems in the design and construction of double vault tunnel and extreme small space tunnel for the purposes of providing reference design of similar tunnels.

Wire bonding is the most classical and most mature technique for IC interconnection,which takes most of the market share,there are also a lot of research on ultra-fine-pitch wire intercon-nection must to do.

So it is a key technology which must be solved in chip miniaturization to study the ultra-fine-pitch wire bonding technology.

A Multi-Objective Evolutionary Algorithm Based on Spatial Distance

In order to improve the remains ratio of the image edge in the gray processing,considering the method of improved gray processing based on color spatial distance.

Based on combination of coordinate and attribute, three spatial distance measurements are defined.