High bending fatigue strength and contact fatigue strength are needed for heavy duty gear steels.

重载齿轮钢要求具有高的弯曲疲劳强度和接触疲劳强度.

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The approaches to control bending fatigue of the leads to metallic packages were investigated systematically.

笔者系统地研究了改善金属封装外引线抗弯曲疲劳的方法.

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Metal bar wound be fractured under the rotating - bending fatigue alternating stress.

金属棒料在旋弯交变应力作用下会发生疲劳断裂.

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