... stress fracture of foot 足应力骨折 low stress fracture 低应力断裂 plane stress fracture 平面应力断裂 ...
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结果表明：在焊缝区域内存在着局部未熔区以及铸造疏松组织和二次裂纹等缺陷，这是导致试样低应力断裂的根本原因。
The results show that the partial unmelted region, casting defect structure and secondary crack form in the welding seam, which result in the low stress breakage of the samples.
对于敏感性材料，在低应力水平下也会发生断裂，危险性很大，容易引发承压管道和设备的爆破，造成重大事故。
Sensitive materials under low stress will suffer breakage which brings about large risk explosion of pressure bearing pipe and equipment is easily to be triggered causing major accident.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
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