Using this system,the processing parts for inner work can receive the data gathered from outer work and aerial survey,and the plane section or the hydrology section drawing can be created automatically.

Based on the analytical method (2d-3DOF method) for two-dimensional three degrees of freedom coupling flutter, the flutter-driving mechanism and flutter modality of the classical coupled bending-torsional flutter phenomenon about thin plate sections were investigated.

Combining the practical work experience, the paper points out the shortcoming of average cross-section method in computing earth and rockfill volume, and presents a new method--change average cross-section method.

Research on Establishment the Quality Evaluation Indicator System for Cross-section of Caragana;