实验统计表明：在轴承的失效形式中，由于钢球表面的缺陷而引起的裂纹、裂缝造成的轴承失效达65%。
Statistic data shows that 65% of bearing invalidation formats is induced by surface defects of steel balls.
由实验统计表明：在轴承的失效形式中，由于轴承辊子表面的缺陷而引起的裂纹、裂缝造成的轴承失效达65%。
Counts by the experiment indicated that, the bearing expiration as a result of the bearing surface flaw which in the bearing expiration form, which causes the crack, the crack creates to reach 65%.
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