抗弯疲劳强度;弯曲疲劳强度;抗弯疲劳强度

endurance strength repeated impact bending strength reversed bending strength ultimate bending strength repeated bending stress strength mate bending strength endurance bending strength beyond endurance endurance race endurance bending test bending strength fatigue limit endurance strength vegetation bending strength alternate bending strength bending strength of wood impact bending strength continuous bending strength instantaneous bending strength