脉动抗弯应力疲劳强度 pulsating bending stress: 脉动弯曲应力bending fatigue strength: 弯曲疲劳强度reverse-bending fatigue strength: 反向弯曲疲劳强度bending stress fatigue limit: 弯曲应力疲劳极限repeated bending stress strength: 反复弯曲疲劳强度极限下载手机词典可随时随地查词查翻译