因此，要求钢具有高的弹性极限，高的疲劳强度以及高的冲击韧性和塑性。
Thus, requirements of steel with high elastic limit, high fatigue strength and high impact toughness and plasticity.
对两种不同对接焊缝布置下的船体结构进行疲劳强度和极限承载能力分析。
The fatigue and ultimate strength analysis of hull structure with two different butt-welding lines distribution was researched in this paper.
对笼材料的疲劳强度作了试验。并做出许用应力极限的讨论。
The fatigue strength test of the cage material has been done and the limits for use are discussed.
综合考虑了接触线应力集中系数、尺寸系数、表面质量系数和材料疲劳强度的影响，得到了接触线疲劳极限的统计特征。
Statistical characteristic of fatigue strength of contact wires was obtained by comprehensively considering such coefficients as stress concentration, size and surface quality.
综合考虑了接触线应力集中系数、尺寸系数、表面质量系数和材料疲劳强度的影响，得到了接触线疲劳极限的统计特征。
Statistical characteristic of fatigue strength of contact wires was obtained by comprehensively considering such coefficients as stress concentration, size and surface quality.
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