According to the influence of the traffic and towns toward the social development,this study sets up the traffic net density value,traffic trunk and town influence value model and model of the location advantage value with the square root method.

By means of devices of geometry algebra the general decomposition of gauge potential (spin connection) on a compact n dimension Riemannian manifold has been studied in detail.

When the frequency was 915 MHZ, the diameter of rubber particle were in the range of 3 mm～5 mm, and the radiation time was about 5 minutes, the cross-linking network of vulcanized rubber was destroyed and the reclaimed rubber was obtained.

The effects of curing parameter(R),ratio of plasticizer to binder(Pl/Po) and crosslinker(CA) content on the crosslink network and mechanical properties of the NEPE propellant with low smoke were studied by the swelling experiment,uniaxial tensile and dynamic mechanical test(DMA).