A Special Communication Software Design on Vc++;

As computer has stepped into daily life in depth,people will not use special net and public net limitedly,but also take full advantage of Internet technology to build their own inner net.

Depending on telecommunication networks,enterprise special communication network may utilize the state policy to encourage contest in communication field,find new investing form,and gain new development.

Based on the bed and table of model Y3180 hobbing machine tool, according to the machining nature of roller gear indexing cam, CNC device for special purpose, which has two rotary axes, is researched and designed in the paper.

This paper introduces the necessity and the principle of special computer for special use,and gives the related effective code.

This paper introduced the progress in development of speciality poly (vinyl chloride) resins for tubing, cable and medical appliances, and pointed out that the synthesis of environment-friendly speciality poly(vinyl chloride) resin represented one of the research and development directions in this field in the coming years.

In order to further study other relevant issues in residential areas,a new perspective is suggested to define the nature and attribution of common parts ownership with owner s partitioned ownership,to specify the content of co-ownership,and to explore legal nature of ownership and right to exclusive use.