Then getting the methodology principle to clear up the contrary theory from the solution of two famous contrary theory,that is,the original frame must be broken,the now look and new theories must be put forward,and point out finally that,in the progress for industri- alization,the economy development and enviromental protections meet an antinomy by all means.

The core of easement is essence and presence principal of its own.

Since most of the WTO members reject immediate application of WTO rules,a uniform interpretation principle recently laid down by the European Court of Justice(ECJ) in decided cases suggests a bright future for solving the poser.

By using nonlinear alternative fixed_point theorem, a existence principle of positive solutions to this problem are established.

Two existence principles have been reestablished for the second-order nonlineardifferential equation with y satisfying Dirichlet ormixed boundary data.