Now velocity measurements for open fluid field are facing many problems,so doing research on the new technology based on optical cross-correlation method is of positive significance.

Taking the relationship between railway opening market and Free Transportation Rights (FTRs) into consideration, especially the barriers to entry decided by industry features of railway, the paper indicates that it is u.

China,as a developing country,can make the relevant risks to open market as low as possible with following the WTO *ss rules.

Regional economic development and fiscal system arrangement under open market condition;

In the end of the year of 2005,China has entered the post-WTO transition period,which means that China s market opening commitments of primary products reached the highest level.