Primary discuss on division standard of grassland pastoral region in China;

Exploration of tunnel length and the converted tunnel length division standard in railway tunnel norms;

Through cases, it summarizes series of stratigraphic division standards which are suitable for the depositional features and electical properties of Xifeng oilfield.

For the comparison of the materials world wide, the differentiating standard for superlarge ore deposits should be simple and convenient.

Project cost analysis of bid-section in highway;