The following statement about fatigue is true ( ).
A、Thestressoffatigueishigherthantheyieldstrengthofstaticload.;
B、Obviousplasticdeformationcanbeobservedatfatiguefracture.;
C、Fatiguefracturecanbedividedintofatiguesource,brightarea,rougharea.;
D、Theoccurrenceoffatiguefractureispremonitoryandiscalledbrittlefracture.
发布时间：2024-09-08 19:20:58
