三维

Secondly, two-dimentional analytic method and three-dimension finite element method is adopted to analyze stratum movement and soil influence during pipe jacking construction, we can know the laws of horizontal and longitudinal deformation of the earth's surface.

然后通过对顶管施工引起的地表变形进行二维解析计算和三维数值模拟分析，得出顶管施工过程中和施工后地表变形的横向和纵向变形规律。

3D shape reconstruction has numerous applications, and the approach to construct solid geometry model from 2-dimensional shape are widely studied.

三维表面重建技术具有广泛的应用前景，由二维图像的光亮重构实体几何模型是工业制造中迫切需要研究的课题之一。

Three dimension metal plastic deformation of special shaped products was transformed into two dimension axis symmetry problem, analysis model of the continuous stream and strain rate fields were sough.

将三维金属异型材挤压塑性成形问题转化为二维轴对称成形问题，求解椭圆异型挤压金属塑性成形连续流动场和应变速度场的数学解析模型，并应用金属塑性成形理论，建立了精密挤压异型材优化模腔的数学模型，同时为精密快速地实现挤压模腔的CAD/CAM一体化目标提供了技术支持。

With the rapid development of technologies such as computer software and hardware, graphics, spatial measurement and spatial data storage, it is inevitable for geographic information system turning from 2D to 3D.

随着计算机软硬件技术、图形学、空间测量、空间数据存储等技术的日益成熟，地理信息系统由二维向三维的转变已成为必然的发展趋势。

Based on the one variable multi-dimension spectral representation method, the cross-spectrum of the vertical wind and the portrait wind has been considered.

在单维多变量随机风场合成方法的基础上，引入了纵向与竖向脉动风速的交叉谱的影响，模拟了三维脉动风速时程。

Finally, based on the geometric model and arithmetic for the coordinates of spherical circular hole series, this paper demonstrates how to convert the planar measuring and calculating results to three-dimensional measuring results, and exhaustive experiment results validate the precision this measurement could achieve.

最后建立了球面孔系坐标的几何模型及算法，实现二维测量到三维测量的转换，并以详尽的实验结果对本测量系统所能达到的精度进行验证。

Second, for removing the influence, we develop the least squares method based on the stereographic projection implemented on a three-dimensional plane. It is described by the expressions:(4.35挆4.39). This method resolves some problem in Multi-sensor alignment on the same platform when the attitude errors are relatively small.

其次为了克服基于二维区域性平面中立体投影所产生的影响，本文推导了基于三维立体投影的最小二乘配准算法，其实现过程见式4.35～4.39，在传感器姿势误差较小的情况下，此算法解决了基于同一平台的多传感器配准中存在的问题。

In addition,a stereometry was carried out by means of the two Bio-stereological assessment systems:the square...

结果 ：发现经脉线上和经脉线外对照区表皮细胞层缝隙连接的二维、三维 8个参数均差异明显(P 0 0 1，F检验)。

Obtained the calculation formulas of stripe—pillar size of two and three dimension in the pillar containing joints by analysing it. Studied the effect of joint trace, angle, density and tension strength on the stability of stipe—pillar. Obtained the upper—limit value of joint angle that has no effect on the stability of stripe—pillar.

通过对含节理煤柱的分析，获得了含节理煤柱的二维、三维条带煤柱尺寸计算式，分析了节理迹长、倾角、密度、抗拉强度对条带煤柱稳定性的影响，获得了节理对条带煤柱稳定性无影响的节理倾角上限值。

In the new method for two-dimensional problems the line integrals onboundary elements are converted into the evaluation of potentialfunctions at the ends of these elements.For three-dimensional cases,thesurface integrals on the usual boundary elements are transformed,through an application of Stokes'theorem,into line integrals on thebounding contours of these elements.

边界轮廓法是刚刚出现的一种新型的边界元法，该方法的核心是利用边界积分方程被积函数散度为零的特性，对二维问题，原积分方程中沿边界单元的线积分被化为单元两端点势函数之差计算，对三维问题，将边界单元上的面积分转变为沿单元轮廓的线积分，它是一种十分简便有效的边界元新技术。

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。