弹簧高周疲劳极限
Spring high cycle fatigue limit
单轴拉伸疲劳试验
uniaxial tensile fatigue test
大应力疲劳断裂
Fatigue fracture under high stress
纯弯曲疲劳试验机
Rotating bend fatigue testing system
垂直弯曲疲劳断裂
vertical bending fatigue fracture
冲击疲劳性能
property of impact fatigue
impact fatigue
impact fatigue property
冲击疲劳试验机
impact fatigue testing machine
冲击疲劳抗力
impact fatique resistance