各向异性现象

It is proven that the choice of entrance of light and the beginning of the tangent from crystal surface has no effect on resolving the final direction of light in crystal by Huygensdiagraph and a conclusion that light will still spread in line in singleaxiscrystal is drawn.

当光波入射至单轴晶体时，由于晶体结构的各向异性，入射光波在晶体中将分成两束，一束称o光或称寻常光，另一束称e光或非寻常光，这种现象被称为双折射。对于o光和

The results show that there exist the fast P wave (qP1), fast S wave (qS1), slow S wave(qS2) and slow P wave(qP2) in 3-D dual-phase anisotropic media during the propagation of elastic wave. And the special phenomena such as the S wave splitting, the blind paints of the S wave splitting and wavefront triplication are clearly observed.

结果表明，弹性波在三维双相各向异性介质中传播时存在快纵波qP1、快横波qS1、慢横波qS2和慢纵波qP2，并清楚地观测到了横波分裂、横波分裂盲点、波面三分叉等特殊现象。

Dielectric, piezoelectric and electrmechanical coupling properties of PZT and PSZT systems at high Zr content region were studied. The feature of high Kt and low Kp of PZT-based materials near F-AF phase boundary was exploited and examined, and electromachanical coupling anisotropy Kt/Kp is higher than that at the morphotropic phase boundary , Kt≥0.40, Kt/Kp≥3. 0. This phenomenon can be realized by electric field -induced AF-F phase transition and explained by coupling effect of two-sublattice in antiferroelectric unit cell.

研究了PZT和PSZT两个系统在高锆区的介电、压电和机电耦合等性能，首次发现了PZT基材料在铁电-反铁电相界处具有高Kt和低Kp的性质，机电耦合各向异性Kt/Kp也比准同型相界要高，Kt≥0.40，Kt/Kp≥3.0，并把这一现象归因于电场诱导AF-F相变和反铁电双子晶格间的强耦合作用。

The new heat treatment process of isothermal spheroidize→preheat fully→quenching→tempering was tested.

由于Cr12钢铸态时存在鱼骨状共晶碳化物，这种状态随着钢锭凝固速度的减慢和锭型尺寸的增大而加剧，虽然在锻轧过程中共晶碳化物被破碎，但钢中还是存在碳化物分布不均匀或纤维方向性的现象，导致钢材的各向异性。

As compared with undrawn PET film, the hot drawn PET film showed shorter crystallization induction period, faster development of long period, anisotropic in SAXS and WAXD patterns, with considerable thermal contraction along the direction of drawing and small lengthening in the direction of drawing during crystallization.

研究结果表明：热拉PET膜的结晶诱导期较短，长周期发展得较快，结晶后小角X-线散射表现出明显的各向异性，在热处理过程中先出现显著的热收缩，随后又表现出结晶伸长现象，这些都和未拉试样有明显的差别。

Fracture is caused by sheet's tensile instability, Hill's totalized instability theories and Swift's diffuse instability theories which based on continuous mechanics are applied to isotropic blank; Marciniak and Kuczynski's theories are applied to orthotropic blank, which introduced thickness imperfections normal to the principal stress and strain direction as a groove pre-existing defects in the material. The stability of each part of blank at each moment is described by numerical method, and the results are shown by computer simulation, thus the fracture in sheet forming can be predicted preciously.

拉裂是由于拉伸失稳引起的，以连续体力学为基础的Hill集中性失稳理论和Swift分散性失稳理论应用到各向同性板料进行失稳判定；将Marciniak和Kuczynski的凹槽损伤失稳理论应用到正交各向异性板料拉伸失稳判定，对板料各处在成型过程中不同时刻的稳定性进行数值化描述，并运用计算机仿真技术进行直观的表现，可以准确地预测板料成型中可能出现的拉裂现象。

Seismic anisotropy can be studied by four basic seismic wave behaviors, e.g, direction-dependent travel time anomalies, shear-wave birefringence, surface-wave scattering, and direction-dependent conversion of compressional waves to shear waves.

目前人们利用4种基本的地震波现象研究地震各向异性，如横波双折射、面波散射、与传播方向有关的走时异常和PS转换波震相。

Bispectral analysis and dynamic spectral analysis are applied to the wind data of June, 1997, measured by MF radar in Yamagawa, Japan, to investigate nonlinear interactions among planetary waves, tidal waves and gravity waves in the mesopause region.

对中纬度中频雷达1997年6月82km高度的小时平均风场数据进行了动态谱分析和双谱分析，得到了中层顶区域谱行为具有多样性和各向异性的特点，以及行星波、潮汐波和重力波之间相位相干的现象，讨论了中层顶行星波、潮汐波和重力波之间存在非线性相互作用的可能性。

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。