查询词典 two dimensional

In this paper,the updated Snake model is used to solve the echocardiography processing.Based on the updated active contour model,the contour points for two-dimensional slice serial of echocardiography are gotten.On this basis,through calculating the distance between the contour points of each two-dimensional slice and the center axis lines,the distance matrix from the four cambers of the ventricle to the center plane of ventricle are gotten.And through interpolating,smooth handling and filtering,the 3D endoscopic surface of ventricle is fitted out.Besides,in the medical measurements field,the slice area of ventricle and the volume of ventricle are measured,and the trend of slice area is also analyzed.

将改进的Snake模型应用于心脏超声波图像处理：基于改进Snake模型的思想，得到了心脏超声波图像二维切片序列的轮廓点，在此基础上，得到分割出的心室上下左右4个曲面上轮廓点到中心平面的距离矩阵，并通过插值和平滑处理以及滤波处理工作，拟合出心室的三维曲面图，取得了较好的效果；在医学测量方面，对心室的切片面积、变化趋势及心室的体积进行了测量。

The two-dimensional continuum can be split into two one-dimensional continua: time and space.

对于每一个坐标系，二维连续区都可以分解为两个一维连续区：时间与空间。

The two-dimensional continuum cannot be split into two one-dimensional continua as in classical physics.

二维连续区不能像在经典物理学中那样分解为两个一维连续区。

Assuming a one-dimensional signal, features correspond to points of the maximal Fourier phase congruency; for a two-dimensional signal, phase congruency is obtained by convoluting signal with two filters in quadrature.

对于二维信号，相位叠合可通过一对相位正交的滤波器得到，最常用的滤波器是Gabor滤波器的偶和齐的滤波器。

Alteration and modification on two-dimensional electrophoresis in Arabidopsis thaliana , such as improvements in protein extraction, lyses buffer, adding thiourea, provide a better separation result. This paper has an optimism of the experimental conditions on two-dimensional electrophoresis.

通过对拟南芥双向电泳技术过程中的适当改进，如蛋白质的提取与溶解方法、上样量和聚丙烯酰胺凝胶浓度，加入硫脲，硫代硫酸钠等，对拟南芥双向电泳技术进行了优化，提高了双向电泳图谱的蛋白质点数目与分辨率。

Two-dimensional,three-dimensional morphoses are two important teaching contents in the basic design teaching chain,which are not only independent but also connected.

中文摘要：二维、三维形态构成基础是设计基础教学链上的两个既独立又相连的重要教学内容。

There are two kinds of methods for the supramolecular organization i. e. the formation of colloid crystals and the templated assembling. Two dimensional and three dimensional superlat tices can be obtained with the colloid crystal method.

胶态晶体法是利用胶体溶液的自组装特性将纳米团簇组装成超晶格，可得到二维或三维有序的超晶格。

Two-dimensional photonic crystal possess only pseudo photonic band gaps, so it is interesting and meaningful that whether the spontaneous emission of the atoms in two-dimensional photonic crystals can be controlled effectively.

二维光子晶体只有赝带隙，因此能否利用二维光子晶体有效控制原子自发辐射是令人感兴趣也是有实际意义的问题。

The analysis shows that with given grid size higher accurate difference scheme can give higher resolutions with wider range of scales, or with given accuracy large grid size can be used for the higher accurate difference scheme. The second part is the numerical simulation of two-dimensional axisymmetric jet. The simulation results show the structure in the near field and the initial transition. In the near field, Kelvin-Helmholtz instability leads to the formation of vortex ring, and nonlinear growth leads to the merging of vortex ring. This is the main instability form. Under the assumption of axisymmetry and two-dimensional computing conditions, the results are applicable only in the near field.

第二部分采用高精度的差分格式对二维轴对称射流进行了数值模拟，模拟结果显示了射流流场结构和涡结构的发展过程，在射流流场近区，K-H失稳导致涡环的产生以及非线性效应的增长导致涡环的对并是射流失稳的主要形式；分析指出在轴对称假设下的射流数值模拟只适用于射流近区的分析。

In this paper, some improvements have been made on the traditional gradient interpretation methods for the two-dimensional fault gravity anomalies:① The least squares fitting technique is adopted to figure out the dip angleαof the step;② The dip angle and the horizontal boundary of the step are directly used to calculate the burial depth of the step;③ the interpretation method for gravity two-dimensional gradient is extended to the interpretation of the complex fault model.

摘要对以往的二维断裂重力异常的梯度解释方法作了几点改进：①采用最小二乘拟合方法求取台阶倾角α；②直接利用台阶倾角与台阶的水平边界位置来计算台阶的埋深；③将重力二维梯度解释方法推广到复杂断裂模型的解释。

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。