裂纹

When Ts is 850 ℃,grains are fined and the size of βphase and the distance betweenβphase pasticles are small.The corrosion barrier effect ofβ phase onαphase is enhanced and the iron content does not increase much at this temperature.So the corrosion resistance is improved.The corrosion resistance of AZ70 alloy falls off when Ts is 890 ℃,which attributes to the presence of microporosity,hot cracking and increase of iron content.

过热温度为810 ℃时，热速处理对合金耐腐蚀性能的改善作用并不大；过热温度为850 ℃时，热速处理显著细化了合金晶粒，β相的尺寸和间距变小，β相对α相腐蚀的阻碍作用增加，而且合金中的铁含量并没有提高，从而改善了合金在试验条件下的耐腐蚀性能；过热温度为890 ℃时，组织中存在热裂纹和显微疏松缺陷，合金含铁量显著增高，合金的耐腐蚀性能下降。

The scanning electron microscope , transmission electron microscope and ion microprobe are used to verify its mechanisms from different angles.

为了全面地证实腐蚀疲劳裂纹扩展机理，作者采用扫描电镜、透射电镜、离子探针等手段，从不同角度寻找多方面的证据。

The means of experiments including fresh fracture surface, dislocation morphology adjacent to tensile fracture surface and longitudinal microsection of failed tensile specimen observing, Auger spectrum analysing and in-situ investigating of crack growth.

为深入研究Al—Li合金低塑性沿晶断裂的原因，论文对合金自然时效和峰值时效态的断裂行为进行了较全面的分析，所采用的实验手段包括：拉伸断口纵剖面观察、新鲜断口观察、断面俄歇能谱成分分析，裂纹扩展动态观察及断口附近位错形态观察。

Effect of longitudinal magnetic field on microstructure and properties of MIG weld joint of mild steel

采用横向变拘束试验，研究铝锂合金和2024合金的焊接热裂纹敏感性；并对焊缝组织进行分析，探讨它对两种合金焊接开裂倾向的影响。

The results of finite element computation agree well with those of the Moire interferometric tests.

有限元素法的计算结果同样也表明了TiNi薄带对裂纹的控制作用。

For the structures with multiple details, MSD in the structure happened when two or more than two details emanated cracks at certain time.

对于多细节的飞机结构，到某一时刻，当2个或2个以上细节萌生裂纹时，则认为该结构发生了MSD。

The relationship between subcritical crack velocity and stress intensity factor is obtained. And the fracture toughness is (1.508 4±0.114 3) MN·m-3/2. The multiple correlation coefficient is 0.925 4, which shows that the curve of lgKI-lgvis linear magnificently, and the high discretion of data is caused by mineral composition, separator size and mechanical property of rock itself.

得出采场矿岩亚临界裂纹扩展速度与应力强度因子之间的关系，矿岩断裂韧度为(1.508 4±0.114 3) MN·m-3/2；试验相关系数为0.925 4，表明lgKI-lgv关系曲线呈直线，数据离散性大是岩石本身的矿物成分、颗粒大小、力学性质的不均匀所致。

The simulation results show that the mutual inductance between eddy current sensor array can provide some useful information about the sizes and positions of the cracks.

仿真结果表明探头线圈间的互感可提供裂纹大小和位置等有用信息。

The stable growth of cracks in a brittle materialwith three mutually perpendicular families of cracks under proportional tensile loadsin the three principal directions is studied.

研究了含三相正交分布微裂纹的准脆性材料在三个主应力方向比例加载下的稳定扩展的规律。

Generation and propagation of crack was the typical character of α-Si〓N〓 under ball milling at room temperature.

形变严重局限在球磨α-Si〓N〓颗粒的表层，在球磨过程中主要通过裂纹的形核与扩展使颗粒尺寸细化。

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。