结果表明,真空使疲劳寿命提高,疲劳曲线右移.The effect of vacuum on the fatigue Scanning Electron Microscopy ( SEM ).此外, 冲击功的提高使疲劳磨损加重,磨损质量损失均有所增加.In addition, increasing the ballistic work can aggravate the fatigue wear....