British government began to negotiate with the leader of AFPFL of Burma on its independence, which speeded up the reunification process of Burma Proper and the minority.

In this thesis, observational studies of OPE and volatile organic compounds (VOCs) are conducted at the Shangdianzi Background Station, relationships between VOCs and OPE are discussed,and differences in pollutants concentrations and OPE values among different air parcel backward trajactories are studied.

Study on two samples location parameter of non-parameter statistics;

The Study of Certain Airborne Equipment Stores Pylon Structure s Reliability under the Terms of Little Sample;

The expectation value of the function of sample averange and its convergence rate;