二维的

By 3D angiography method,we can summary some optimal projection angle of intracranial arterial stenosis by 2D angiography method.

三维重建成像颅内动脉狭窄显示角度二维脑血管显示狭窄部位提供具有非常重要的指导意义。

Purpose To compare two dimensional method (2D) and three dimensional method (3D) with spiral CT for measurement of femoral neck anteversion.

目的 研究比较螺旋CT二维法和三维法在小儿股骨颈前倾角测量中的应用价值。

An improvement has been carried out on the generation method of 2D engineering drawing from 3D model in AutoCAD, and formed an intact methodology and skill of generating axonometric drawing and multi-planed orthogonal projection drawing from 3D model.

对AutoCAD中由三维模型生成二维工程图的方法进行了改进，形成由三维模型生成轴测图和多面正投影图的完整方法和技巧，这种方法所得到的轴测图和正投影图，可以对其更加方便地进行各种编辑，是一种适用的方

Compared with the common definition in the three-dimension method, the radiation intensity I〓 after dimensionality reduction is defined on the base of plane angle.

与三维方法不同的是，降维后的辐射强度I〓是在二维系统平面角的概念上导得的，其值为辐射力E的一半，即I〓=E/2。

A least distance method is applied to calculate the deviation between the datum line of the real femur and the standard femur model.

对于待重建的股骨，从二维图像中提取特征点进行匹配，建立一条作为三维重建的骨干基准线，并运用最小距离法计算三维标准股骨模型的基准线的偏差量。

A new series of the ligands of liquid crystal polymers with T-shaped two-dimensionl mesogens was synthesied by solution condensation polymerization by using 4,4'-(α,ω-alkylenedioyloxy)-dibenzol dichlorids with 2,4-dihydroxy-4 '-alkoxyl azobenzene as the monomers.

摘 要 以4，4′-二苯甲氯和2，4-二羟基-4′-烷氧基偶氮苯为单体，通过溶液聚合，合成了一系列新的含T-型二维液晶基元的液晶高分子配体。

A new series of the ligands of liquid crystal polymers with T-shaped two-dimensionl mesogens was synthesied by solution condensation polymerization by using 4,4'-(,-alkylenedioyloxy)-dibenzol dichlorids with 2,4-dihydroxy-4'-alkoxyl azobenzene as the monomers.

以4，4′-二苯甲酰氯和2，4-二羟基-4′-烷氧基偶氮苯为单体，通过溶液聚合，合成了一系列新的含T-型二维液晶基元的液晶高分子配体。

This paper presents an alternative way to transform the double integral in elasticity problem on 3-d into the linear integrals on the boundary of each subdomain, so that all the singular integrals and nonsingular integrals are calculated by analytical method.

采用积分区域变换和高斯定理，将三维弹性问题的二维积分化为一维积分，使奇异积分和非奇异积分能使用精确积分的方法计算，为边界元奇异积分的计算和处理提供了新的思路。

Compared to the flat culture, cells in 3-D culture more closely mirror what happens in living organisms in morphology, cell alinements, polarization, microenviroments, gene expression pattern and other biological characters. Therefore,3-D culture is useful to investigate the molecular mechanism of nasopharyngeal carcinogenesis.

因与传统的二维培养相比，细胞在三维培养中的形态、排列方式、极性及微环境更接近于体内状态，其基因表达和生物学行为也更接近于体内状态，因而建立能反映鼻咽癌发病不同时期的体外三维培养模型对于鼻咽癌的发病机制研究具有重要价值。

basing on optics orthogonal codes,this paper proposes a new design scheme of three-dimension optics orthogonal codes.in this scheme,the optics orthogonal codes can be coded not only in space-domain,in time-domain,but also in frequency-domain.it has good auto-cross relativity properties.the simulation figures show that can enlarge the coeds capacity and improve the optics optical communications system performance.so it will be of interesting in coming high dense communication system.

摘 要：基于光正交码编码技术，提出了一种新型空/时/频三维ooc的设计方案，对光信号在时、频和空域进行编码，该码具有理想的自/互相关特性。通过仿真比较，在容量和系统的误码率等性能方面比一、二维ooc都有较大的提高，因而能很好地适应未来高密集光纤通信。关键词：三维光正交码；光码分多址；误码率；高密集光纤通信

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。