The specimens are loaded for a defined period of time under creep condition with defined temperature,after which the craze densities are measured with an optical microscope.

The existence and characters of crazes were proved and the compensating mechanism of crazes was put forward.

In the view of that the craze is a manner of nonli\|near deformation of polymers, a series of experiments on the stress induced craze and craze damage in the crack tip of modified polypro\|pylene were made by using Moir technique.

The interfacial debonding, crazing and shear yielding are analysed when the interaction among the muIti-particle is taken into account.

The entire procedures of the crazing induction-formation-destroy of the PVC/MBS mixtures under stretching stress were observed by SEM, and it was illustrated by the density determination and inmer structure of the crazing that the material had been left "empty ".

Transmission electron microscope(TEM) showed that SAN component promoted the crazing and PVC the shear yielding.

Study on Photosynthesis and Water Physiology of Cinnamomum septentrionale;

The leaf essential oil of Cinnamomum septentrionale collected from an artificial planting population in Chengdu city, Sichuan province were analyzed by capillary GC/MS.