this text brief introduced that it is important that using quantity method to describe damages of warship for using our navy salvage and rescue forces rationally in the future war time,and give us an superficial study about basic quantity principle and method of damages degree of warship.

Based on the whole-system dynamic accuracy theory and the dynamic error decomposition and tracing theory,this paper developed a new theory of dynamic measuring-system accuracy losing diagnosis theory.

Diagnosis of degradation degree of ecosystems is the basis and the precondition of ecological restoration .

Study on damage diagnosis of guide wall based on flood discharge response;

The application of BP neural network in structural damage diagnosis of bridges;

Two-stage damage diagnosis for the benchmark model structure;

Summary review and outlook of structural damage detection in civil engineering;

Structural damage detection study based on Hilbert-Huang transform;

Studies on Damage Detection for Offshore Platform Based on Vibration Response;