求翻译：含有裂纹的40CrNiMo齿轮材料试件经脉冲放电止裂强化后，一方面裂尖处圆钝、圆滑，减小了裂尖处的应力集中系数；另一方面，裂尖处组织得到明显细化，形成强韧性均较高的组织，达到了强化的目的。是什么意思？

Containing crack 40crnimo gear material specimen by the pulse discharge crack strengthened, on the one hand, the crack tip blunt, smooth, and reduce the crack tip stress concentration factor; the other hand, the crack tip organizations have been significantly refined, the formation of strong toughne

Contains 40 cracks CrNiMo gear material is cut out for the Pulse discharge after hardening, and cracking a cleft in the tip of the blunt, rounded tip, reducing the cracking of the stress concentration factor; on the other hand, torn apart by obvious tip of the fine organizations and formed a high to

Includes the crack 40CrNiMo gear material test sample to stop the crack strengthening after the pulse electric discharge, on the one hand the crack point place circle was obtuse, is smooth, reduced the crack point place stress concentration factor; On the other hand, cracks the point place organizat

40CrNiMo gear material containing crack after crack enhanced by pulsed discharge, the specimen, crack-tip round blunt, rounded on the one hand, reduce the crack-tip stress concentration factor at one hand, crack-tip organizations significantly thinning, higher strength and toughness of the formation

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