裂纹

The steel structure of plamsholding dagoba for Famen Temple is constructed with steel Q345GTC. The construction period is necessity through the winter, even from ovember of 2007 to February of 2008. Negative temperature of environment exerts direct influence to welding quality. If the droping speed of temperature is quick, the metal will be brittle, also, the possibility of crack produced at weld is increased.

摘要］ 法门寺合十舍利塔钢骨结构工程钢骨采用Q345GJC钢，施工经过冬季阶段（2007年11月～2008年2月），由于冬季施工的负温环境会使焊接质量受到直接影响，降温速度加快使焊缝金属脆化，增加裂纹产生的可能性，控制不好会造成焊接质量的下降甚至造成安全隐患。

The dynamic stress-strain and welding residual stress during welding are the significant factors which lead to welded cracking and debasement of the joint properties.

在焊接过程中产生的动态应力应变及随后形成的残余应力，是导致焊接裂纹和接头性能下降的重要因素。

By utilizing a general solution derived, straight dislocation and crack problems are discussed respectively in two-dimensional decagonal quasicrystals with point groups 10 and 10mm.

利用导出的通解公式，我们分别对点群为10和10mm的二维十次对称准晶中含有直位错和裂纹的情况进行了讨论。

The process that gas desorbs from coal containing gas is a process of decalescence during which the coal temperature comes down gradually.

含瓦斯煤体在破裂过程中产生热效应，而且随着裂纹的扩展在裂尖区会产生附加温度场。

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。

By direct microscopic observations of thin section of Inada granite in the heating process, decrepitation temperature of fluid inclusions in quartz and feldspar was determined to be in a range from 170℃ to 550℃, and thermal microcracking due to the decrepitation of the fluid inclusions was ascertained.

通过常温及高温显微镜观察，查明了稻田花岗岩中流体包裹体的初始分布状态，并发现在高温条件下，由于流体包裹体的爆裂而导致花岗岩中微小裂纹的形成。

With the increase of Al_2O_3 content, the TiB_2 grains are smaller and the deflexion of crack expanding increases.

对材料韧性的研究结果表明，随着Al_2O_3含量的增加，TiB_2晶粒的细化，裂纹的扩展偏转增多。

And some important phenomena which is very different from the stiff interface such as the interface debonding and sliding, crack defluxion, fiber bringing and pulling out have been successfully reproduced and revealed in the case of soft interface, accompanied result of acoustic emission is also presented.

可观察到考虑柔性界面时的界面脱粘、裂纹偏折、纤维桥联和拔出等现象，而刚性界面复合材料的破坏路径表现出完全不同的特性，同时得到相应的声发射模拟结果。

Freeze-thaw deterioration, which is typically behaved as two types of distresses: durability crack and deicer frost scaling, is one of the main damage causes of cement concrete pavement in freezing area.

以冻融耐久性裂纹和盐冻剥蚀损坏为代表的冻融损坏是冰冻地区铺面水泥混凝土的主要损坏类型之一。

The resuits show that metallurgical deject is the main reason leading to early formation of fatigue crack under normal working stress .

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。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。