The article presents a type of three-layer structure method to construct the 3D GIS application,and the three layers are data model layer,object layer,and application layer.

Labor relations in modern market economies are dedicated with these fundamental propositions, which are "labor is not a commodity", "tripartite structure of labor law subjects" and "everyone can share the fruit of Social progress and social prosperity" .

3D structure from aerial image sequence based on affine transformation;

3D structure and dynamic types of the lithospheric crust in continental China and its adjacent regions;

3D structure of the asthenosphere beneath China and adjacent land and sea areas and its interaction with the lithosphere;

Determination of the three-dimensional structure of Anemoside A_3 in solution by NMR and molecular simulation;

Development of the study on genome and three-dimensional structure of rice dwarf phytoreovirus;

Homology modeling and analysis of three-dimensional structure of Arthrobacter K1108 hydantoinase;

In this paper analyzing stationary structures of NH~+_(4)(H_(2)O)_(n)(n=1~6) clusters,it is found that the first stationary structure is linear hydrogen bonding NH~+_(4) with H_(2)O in clusters,the second is bifurcated structure,the third is trifurcated structure.