三维

In reparametrization with arcs length, the curvature and torsion is invariant to translation and rotation transformation. The curvature and torsion are views as feature sets.

无论是二维碎片物体还是三维碎片物体的形状复原问题，皆看成是特殊的物体识别问题，其特殊性就是在处理的方法上采用基于轮廓线的匹配来识别。

The 2-D model indicate that integrateddevice structure with bury layer has self-limitation resistance property and specificresistance increase almost linearly with device area.The 3-D model has no property ofself-limitation resistance,while the result is the same as that for specific resistance of2-D structure.

得到的结论是在二维情况下，该结构的电阻具有自限制特性，比电阻具有近似的随尺寸增加而线性增加特性；在三维情况下，其埋层电阻不再具有自限制特性，但比电阻仍然有同样近似线性增加的特性。

This method use the silhouette of object in image as feature, after approaching with polylateral, a serious control point can be got, the feature vector of object's contour can be got by calculating the parameter of AR model, which use the sequence of angles got from control points.

该方法以目标二维方面图轮廓为特征，经多边形逼近获得边界控制点，计算出边界控制点对应角序列的AR系数作为相应方面图的特征向量，建立三维目标的在各种姿态下的姿态特征库。

Thus, the problem of seeking motifs of protein structures can be solved in a character sequence space.

在此基础上，可以将蛋白质三维构象空间映射到一维编码空间。

The predicted two-dimensional axisymmetric distributions of density and mass fraction were converted to the three-dimensional distributions,and then the computational shadowgraph s were obtained based on the optics theory of the shadowgraph.

并将计算获得的密度和组分等的轴对称二维分布转换为三维分布，由阴影图的光学原理，绘制了相应的计算阴影图。

The symmetric non-stationary phase shift extrapolation operator can accommodate transverse variation of velocity as well as the anisotropic parameter. Although a 2-D VTI example is present in the paper, the proposed algorithm can be used in 3-D TI media as well.

所建立的各向异性介质对称非平稳相移波场延拓算子可以同时适应速度及各向异性参数横向变化；文中给出的算例虽然是针对二维VTI介质的，但所提出的算法同样适用于三维TI介质。

It was found:(1) the stability of the clusters increased with the bond number in the clusters;(2) the clusters with three dimensional geometry are more stable than ones with two decisional geometry;(3) the ionic potential of the clusters in gas phase and on the surface of the silver bromide grains are all positive, and the electron affinity are all negative.

结果表明；气相中团簇的稳定性随团簇中键数的增加而升高，三维构型的稳定性大于二维构型的稳定性；气相中Ag〓团簇的电离能都大于零，电子亲和势都小于零；溴化银颗粒表面的Ag〓团簇的电离势也是大于零，电子亲和势也是小于零。

The dissertation is devoted to the study of the effectiveness of dielectric anisotropy on the creation of the PBGs in simple lattice structures.

采用平面波方法和FDTD方法对其研究的结果表明：在二维情况各向异性是非常有效的，但对于三维情况介质各向异性的作用则是很有限的。

The thermodynamical properties of the two dimensional square lattice and the three dimensional simple cubic lattice transverse Ising model with spin - 1/2 are investigated within the framework of the finite cluster appraximation.

本文在有限集团近似的框架内研究了自旋为1/2的二维平方晶格和三维简立方晶格横场伊辛模型的热力学性质，得到了相应的相图，临界温度和临界横场。

Founded upon these results, singular stress fields, complex stress intensity factors and energy release rate for local extension of 3-d planar crack on the interface are rigorously obtained by use of dominant-part analysis of 2-d hypersingular integrals.

在这些研究结果的基础上，应用二维超奇异积分的主部分析方法，精确地得到了界面三维平片裂纹前沿的应力奇性场、复应力强度因子和裂纹局部扩展时的能量释放率。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。