Discussion on the Theory and Method about Preserving Health by Exercise of WuTing-fang s New Method of Prolonging Life;

Approach of calendar life extension for aircraft structures;

This article briefs the present status and technical characteristies of various kinds of hot spraying techniques,and details the application status of supersonic arc spraying (SAS) technique in the life extension and restoration of power plant equipment,such as on the steel structural components,"four tubes" exposed surface,fan wheel,blades of steam turbines.

The identification of the weak points is essential for inspection and life extension repair of the structures.

This paper introduces the fatigue test of full scale aeroplane wings which serves as the basis of life lengthening analysis for aged aeroplanes.

Function of ecology recover and blockading administration in restoring nature ecology in Yanshou County;

Measure for causation of soil and water erosion in Yanshou County;

Study on Regionalization of Land Ecological Function and Environment-friendly Land-use Patterns in Poverty Agriculture Areas——As an Example of Yanshou County