This article studied the effect of fusant temperature and the cross air blasting speed on the degree of profile and discussed the relationship between the degree of profile and the orientation structure and mechanical properties, by measuring the degree of profile, the orientation factor, sonic modulus, breaking strength, breaking elongation of the trilobal PET.

The results shown that,as the drawn ratio increased,the orientation factors by sonic velocity method wereincreased, the water absorption ability of Nafion-H was increased and the water diffusion coe.

This paper mainly studied surface appearance, orientation factor, the creep performance of the profiled polyester fibers.

In recent years,with the relative development of cognitive study,researchers have put forward four approaches about individual differences of intelligence:factor approach,parameter approach,strategies approach and adaptive strategy approach.

Based on the study of the distribution of steel fiber reinforced polymer cement base composite, the quantitative targets of steel fiber distribution such as disperse coefficient, tropism coefficient and effective coefficient were listed out in this paper.