Practice of building joint investigation system of water administration;

The Study on Expressway Engineering Quality Inspection

Optimization scheme of internet data associated query;

Considering the characteristics that the data in the object data set distribute unevenly in each data source,and the problem of low-efficiency data query which exists in practical associated query operations,we propose an improved optimization scheme for associated query,and prove its validity and feasibility.

Joint inspection is very effective during the overhaul of refining units.