裂纹

The wavelet time-frequency features of the cracked rotor and the uncracked rotor were discussed, and the difference between them was presented.

将小波分析方法引入到裂纹转子时频特性研究中，得到了有无裂纹转子的小波时频特性，并讨论了它们的差别。

The former is collocated exclusively on the uncracked boundary, and the latter on one side of the crack surface.

位移边界积分方程的源点配置在非裂纹边界上，面力边界积分方程的源点配置在裂纹面上。

Instant electric field-induced domain switching, crack initiation and propagation in a poled BaTiO3 single crystal, as well as sustained field -induced indentation crack propagation and 90°domain switching in an unpoled BaTiO3 single crystal have been investigated in situ using optical microscopy.

金相显微镜原位观察了面内极化的BaTiO3单晶在瞬时电场作用下的畴变和裂纹形核、扩展的关系以及未极化BaTiO3单晶在恒电场下Vickers压痕裂纹扩展和电致畴变的关系。

The results showed that the unproper grinding parameters resulted in the grinding cracks.

得出，其裂纹系磨削不当造成的磨削裂纹。

Weldable alloys have a composition that falls either well above or well below the maximum cracking sensitivity.

在所有可焊合金中，有某些合金的裂纹灵敏度远远低于极限裂纹灵敏度。

A special scheme for meshing and pre-treatment is required in applications of the manifold method.

随着裂纹的扩展，在一定的载荷作用下，裂纹的扩展速度是一个先增大后减小的过程。

Several types of crack problems on fracture dynamics of composite materialsare studied in this paper, a...

本文着重研究了复合材料的断裂动力学的若干类型裂纹问题，并建立了相关的扩展裂纹的动力学模型。

In the fourth part, by similitude of diagnosing diseases in medical practice, all available informations together with new measuring technique are collected for "sympton"of crack, with the above information a new branch of mathematics-fuzzy mathematics is utilized to judge whether there is any transverse crack in rotor shaft.

在第四部分中，借鉴医学上对疾病的诊断，总结了借助振动试验采集转子轴系裂纹信息的方法，提出了用电涡流测振仪测量转轴裂纹伩息的新方法。

It is shown that absorption effect is the dominant mechanism at high stress level, while blunting effect is dominant at low stress level.

研究表明，在高载荷下，吸附效应为裂纹扩展的主导机理，而在低载荷下，裂纹尖端钝化效应为主导机理。

The nature of coupling between combustion and fracture are twofold in the convecting combustion process of crack cavity. On the macroscopic scale; the coupling appears as the energy and mass transforming between the solid phase of the cracked body the gas phase of the flow field. On the microscopic scale, the coupling induces the evolution of the microstructures, which leads to degradation of mechanical properties of solid materials.

从燃烧断裂耦合的内在形式来看，包括两大方面的内容：在宏观表象上，表现为在含能材料裂纹的对流燃烧过程中，固相裂纹体和对流燃烧流场之间的质能交换形式的热力耦合；在微细观运动方面，热和力的作用诱发固体材料微细观运动和组分、结构的变化，最终改变固体材料的宏观力学性能，表现为固体材料的热力损伤过程。

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。