identification of damage position and damage degre
delay variation delay and delay variation bounded
interdecadal variation and interannual variation
noncyclic variation (=non-periodic variation)
Seasonal variation of diurnal variation
accidental damage
偶然损伤
意外损坏
突发损伤
意外的损害意外事故险
事故性损伤
意外事故险
意外的损害
accumulated damage degree
accumulated damage mechanics ADM
accumulated damage model
Accumulated damage theory
Accumulated fatigue damage