Crack initiation life is much longer than those of low shot peening pressure.
低喷丸强度试件表面微裂纹大量萌生，密度非常高。
Great improvement has been brought about in the service life of springs by hot peening.
用锤头连续敲打金属表面的方法大大地延长了弹簧的使用寿命。
Ball surface deformation Peening technology is an important means of raising ball quality.
钢球表面形变强化工艺，是提高钢球质量的一个重要手段。
Ball surface deformation Peening technology is an important means of raising ball quality.
钢球表面形变强化工艺，是提高钢球质量的一个重要手段。
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