1.The outward internationalization of SMEs in China has developed to some extent recently, but there still exist problems in policy environment, capital, technology and talents, which necessitate the study and the solution thereto.
2.Comparing the geoid undulations and gravity anomalies derived from the above-mentioned models,the results indicate that the IGGGRACE01S solution is close to EIGEN-GRACE02S solution,and there exist large differences between IGGGRACE01S and EGM96 in Antarctica region.
