以下为句子列表：
英文: Abstract: The process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
中文: 文摘:观察了在热应力作用下GJW35钢结硬质合金表面热疲劳裂纹扩展过程。
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英文: By analyzing the influence of hemisphere pits with different dimension and ellipsoid pits with different aspect ratio on stress and strain distribution of lap joint, the possible propagation of fatigue crack was discussed, and the effects of localized pit
中文: 通过分析不同尺寸的半球形蚀坑和不同长短半轴比值的半椭球形蚀孔应力应变分布的影响，探讨搭接件疲劳裂纹的可能扩展方向，讨论局部孔蚀对搭接件结构完整性的影响。
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英文: The resuits show that metallurgical deject is the main reason leading to early formation of fatigue crack under normal working stress.
中文: 认为，该曲轴材料的冶金缺陷是导致疲劳裂纹在正常工作应力下过早形成的原因。
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英文: The microscopic structure of the plane-spring made of 60si2Mn steel after the fatigue crack is observed and analyzed with mettaloscope.
中文: 通过金相显微镜对60Si2Mn钢制汽车板簧疲劳损坏的过程进行显微组织分析,研究了疲劳裂纹萌生的位置、扩展过程和扩展途径,探索提高汽车板簧疲劳寿命的有效方法。
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