The results showed that the fracture was of typical fatigue fracture, and surface defects were the main factor resulting in the failure of the air valve spring.
结果表明，断裂呈现典型的疲劳断裂特征，材料表面缺陷是引起该弹簧疲劳断裂的主要原因。
This was due to the difference in cerebral excitement and body fatigue resulting from a workout during different periods, they said.
研究人员指出，这是由于大脑兴奋和机体疲劳程度不同造成的。
The failure of most valve springs is due to the applied positive stress resulting in the fatigue fracture.
多数汽门簧的失效是正应力引起的疲劳失效。
The main reason for the fatigue fracture of material is that the specimens under action of alternating stress engender slip, finally resulting in dislocation stacking.
材料疲劳断裂主要是因为试样在交变应力的作用下上产生滑移最后致使位错塞积而导致的。
Long-term negative emotional and mental fatigue or interfere with the patient's "sleep center", resulting in sleep disorders.
长期精神过劳或不良情绪等干扰了患者的“睡眠中枢”，造成睡眠障碍。
Long-term negative emotional and mental fatigue or interfere with the patient's "sleep center", resulting in sleep disorders.
长期精神过劳或不良情绪等干扰了患者的“睡眠中枢”，造成睡眠障碍。
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