This paper analysed the supply and demand relation of product market using extension relation,and illustracted the cause of producing market trapBy using the transformation of a matter element,we research the business countermeasure against falltng into market trap.

By analyzing the shift of primary parameters,we found that the hot carriers generated by impact ionization and trapped by traps in AlGaN barrier layer,and the emission of electrons from gate electrode filling in surface states at high gate-to-drian electric fileds,were the primary reasons causing device degradation after different stress.

The Comparative Advantage Trap and the Choice of Strategy of Our Foreign Trade;

The related theory on comparative advantage and the comparative advantage trap is reviewed.

This article embarks on the comparative advantage trap in international division of labor,combining the current situation of ecology crisis,proposed that we should construct the ecology security in the competition,and walk the road of the ecology.

But in recent years, there has been a serious situation in some developing countries where the theory of comparative advantage is applied unfavorable to further development, which is academically called “comparative advantage trap”.

By quantitative and qualitative analysis,this essay proves that there are comparative advantage trap in our country to some extent,and analyzes how it works.

Taking as the main subject the pitfall effect on resources superiority and transform model of resource based economy as the main subject, firstly, the article discusses the economics characteristics of resource type economy, analyses economy crux of resource type region and the essence of resource based economy.