疲劳

For the materials, which have no cyclic steady stage but exhibit cyclic softening, this method isn't suitable to determine the low cycle fatigue damage with the change of stress.

对没有明显循环稳定阶段并表现为循环软化响应行为的材料，不适合用应力的变化来定量的反映材料低周疲劳的损伤过程。

Check paper may affect the pressure of the pressure that the reason for the press paper under the valve in the fuel tanks in the culumn because of the unavailability for a long time fatigue has broken off a section of this article, press paper cylinder performance of the product will be trimmed to be exerted by request, the replacement of a good spring, cut-quatily.

逐一检查可能影响压纸器压力的诸多方面后，发现原因在于压纸油缸内下阀芯里的压力弹簧因用久疲劳折断了一节，致使压纸油缸的工作性能满足不了产品裁切时应施加的压力要求，更换完好的弹簧后，裁切的质量达到了要求。

In 2009 Daimler will introduce a device that warns drivers of fatigue.

2009年戴姆勒公司将推出一种能够警告司机疲劳驾驶的装置。

Presently,it is mainly through human s observation for the road marking vehicle to spray marks along the datum line .

目前的道路划线车，主要通过人的视觉观测，从而操作划线车使其沿基准线喷涂标线，由于驾驶员的视觉疲劳容易出现划线车跑偏的现象。

However, correction of the problem is not through food restriction, which can secondarily lead to immune suppression, stunting, debilitation from multiple nutrient deficiencies, and shortened lifespan, but through increasing humidity.

所以问题的根本不是限制食物，这会造成免疫力下降，发育迟缓，疲劳等等一些营养缺乏症状，并且会影响龟龟的寿命。

Test results show that both of the coated specimens have better oxidation resistances than non-coated ones,and surface oxidation decarbonization is one of the leading forms of thermal fatigue damage s.

研究发现，铁基与镍基涂层的抗氧化能力优于铸钢车轮材料，表面氧化腐蚀是涂层试样热疲劳损伤的一种主要形式。

The spring steel 60 Si2Mn will be decarburized in heating process,and decarburization will reduce the performance of the machine parts.

弹簧钢制作的零件，在热处理过程中会严重脱碳，从而使零件的使用性能，特别是疲劳性能大幅度下降[1]。

In situ SEM observations have revealed that fatigue crack propagation is caused by the shear band decohesion around the crack tip and the formation and cracking of the shear band is mainly caused by the plasticity generated in the loading part of a load cycle.

论文摘要： In-Situ SEM的研究揭示了疲劳裂纹的扩展是由裂纹尖端附近的剪力区散屑和生成热引起的，而剪力区裂纹主要是在循环负载下受载部位产生塑性变形引起。

The results show that fatigue crack began to initiate at an interior inclusion at about 5%-10% of fatigue lifetime, and then many micro-cracks formed dispersively due to the decohesion of spherical carbide around the inclusion from the matrix, which will grow and coalesce each other with fatigue processing.

这种现象被认为是由于材料内部存在的非金属夹杂物引起的闭。目前的长寿命疲劳设计是以材料或结构在1护次应力循环的实验数据为基准的，而机器和结构承受1丁以上交变载荷的情况并不少见[3]。

The prior cycles with higher axial stress and larger strain range greatly restrains ratchetting strain of subsequent cycling with lower ones. Creep behavior plays an important role in the ratchetting strain and its influence on ratchetting behavior can not be neglected. Fracture morphology characteristics of two kinds of materials were investigated by scanning electron microscope. It shows that failure of material A is induced by cavitation and that of material B is induced by decohesion. For material A, with the decreasing strain amplitude the fracture surface shows more larger diameter globular particles under uniaxial loading and can be seen more obvious and deep crack under multiaxial loading. However for material B, with the decreasing strain amplitude fracture surface shows larger and larger scalelike shape and becomes more smooth under uniaxial loading, but fracture surface under multiaxial loading looks like more smooth than that of uniaxial loading, and shows gradually wave-like morphology.

通过扫描电子显微镜研究表明：材料A为空穴引起的失效，材料B为剥离导致疲劳破坏；随着载荷幅值的减小，材料A在单轴载荷下，断口表面浮出更多更大直径的球状颗粒，而多轴载荷下，可以看到很深的裂纹；随着载荷幅值的减小，材料B在单轴载荷下，断口表面鱼鳞片越来越大，表面越来越平整，而多轴载荷与单轴载荷相比，断口表面看上去更加平整，并且随着载荷幅值的减小，断口逐渐呈现波浪形貌；通过微观的傅立叶变换红外光谱分析，结果表明随着应变幅值的增加，无论载荷是单轴还是多轴状态下，橡胶材料吸光度比值随着幅值的增加而增加，这说明体系中的结晶含量也随之增加。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。