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- The chief character of fracture is fatigue striation and dimple. 断口分析表明，合金低周疲劳断口的主要特征是平行的条纹及韧窝。
- The fatigue fracture characteristics were fatigue striation, ductile microvoid, and quasi-cleavage-like fracture characteristic. 疲劳断裂特征为疲劳条纹、韧窝及类似准解理状形貌特征。
- Cowrie pattern area is smaller than fast fracture area. Micromorphology shows that the fatigue striation is the main pattern. So it is the early fatigue fracture. 结果表明,断口宏观上有明显的贝纹线花样,贝纹区面积较小,而瞬断区面积很大,其微观形态主要为疲劳辉纹,因此泵轴的断裂属早期疲劳断裂。
- It is shown that the fracture surface characterized with cowrie pattern lines and the microstructure being fatigue striation, which indicated the fracture of the bolt is brittle. 采用断口分析、金相检验和硬度测定等方法,对断裂螺栓进行了分析。
- Two methods: classical image enhancement and mathematical morphology change are applied to take out fatigue striation and to determine striation distance. 在疲劳裂纹扩展区，随裂纹长度的增 加，撕裂棱面积分数增大；疲劳条带区面积分数减小。
- However, little fatigue striations exist and tyre-like patterns in vacuum. 真空环境下极少出现轮胎花样与疲劳条纹。
- The fatigue striations were readily observed in stable crack growth regions for both aluminum alloys. 另外，从两款铝-镁合金在裂缝延伸的过程中，发现会有因为裂缝延伸产生裂缝尖端塑性钝化而形成疲劳纹路。
- The fracture surface is divided into flatness and inclined area,and there are some beach arc on the flatness area on which fatigue striations appearance can be observed by SEM. 断口分为平坦区和倾斜区,平坦区有明显的海滩状弧线,在扫描电镜下可观察到疲劳条带形貌;
- Crack spreading area and transient breaking are observed, typical fatigue striations, fatigue steps and secondary cracks are observed on some of the fractures. 微观上在少数油管断口中观察到了典型的疲劳辉纹，在很多断口上观察到了疲劳台阶和二次裂纹。
- Both the fractures in air and vacuum, in which fatigue striations, steps and dimples are observed and more areas with the dimples exist under lower cyclic stresses. 真空和室温大气环境下的疲劳断口均出现疲劳条纹、台阶和韧窝，且在低循环应力时出现韧窝的区域增多。
- He was beaten out with fatigue when he got home. 他回到家里时已是疲惫不堪。
- She fell out from extreme fatigue. 她由于极度疲劳而掉队了。
- A very funny joke may relieve you of a whole day's fatigue. 一则非常滑稽的笑话可以使你消除一天的疲劳。
- The aeroplane wing showed signs of metal fatigue. 机翼显出有金属疲劳的现象。
- Keywords Fracture surface analysis;Fatiure analysis;Site of the ergin of orack;Direcuon of the propagation of crack;Fatigue striation;Fatigue failure of hot corrosion; 断口分析;失效分析;裂源位置;裂纹扩展方向;疲劳浑叹;热腐蚀疲劳;
- Fluorin can avoid brown striation and whiten skins. 氟能消除褐色斑,使皮肤变白。
- Fatigue is incidental to a journey in a strange land. 在陌生的地方旅行，容易疲劳。
- Causing fatigue or boredom; wearisome. 累人的引起疲劳或厌烦的; 使人疲劳的
- In powder,port-hole was deep,striation... 结论:这些特征可作为藤梨根生药鉴定的依据。
- It is a treat to have a drink after the fatigue of the day. 干了一天的累活後喝杯酒其乐无穷。
