二维的

Different models for different structure sections are established, namely, one-dimensional piping model for laneway or large hole, two-dimensional structure plane model for absciss layer and contacting weathering zone, three-dimensional seeping fracture section model.

分区建立了采空区不同注浆结构部位的理论模型，包括采空区空洞或巷道的一维"管道"模型、离层与接触风化带等结构面二维模型、导水裂隙带三维模型。

On the basis of previous study, the available procedure for two-dimensional steam flow and heat transfer prediction is modified in the aspects of boundary condition processing method and the matching technique of condenser and air pump performances. The procedure is verified by comparing calculation results of condensers with available experimental data, and a good agreement is achieved.

在前人发展的汽相流动与传热特性二维计算程序基础上，完善了二维计算方法的功能，探讨了各种特殊情况下的边界条件合理给定方法及凝汽器工作性能与抽气器工作性能匹配的方法，并采用制造厂和文献的实验数据验证了物理模型和计算程序的适用性，最后完善了程序的前后处理功能。

Simplier and more efficient ion extraction methods for atomic vapor laser isotope separation AVLIS were evaluated using a 2-D electron-equilibrium model to compute and compare three electrostatic methods the parallel electrode method, the Π type electrode method, and the improved M type electrode method.

为探索用于原子蒸气激光同位素分离AVLIS的简单有效的离子引出方法，用二维流体理论电子平衡模型计算比较了3种静电场方法平行板电场法，Π型电极法，改进M型电极法计算发现，二维流体理论电子平衡模型并不能很好地描述Π型电极法对另外两种静电场方法，计算了不同外加电压、不同的初始原子密度和不同的目标同位素丰度等条件下的离子引出情况从计算结果可以看出，改进M型电极法不论是从离子引出时间还是从碰撞损失率，都要比平行板电极法好得多当外加电压较高或初始原子密度较高时，这种好处就更加明显因此，改进M型电极法是一种可供实际采用的比较好的静电场方法

This dissertation is devoted to studying the ruin theory on the dual risk model with several dividend rates and on the bidimensional perturbed risk model with or without stochastic disturbance, which includes the discounted expected function about the dual risk model with three dividend rates and the ruin probability on the bidimensional perturbed risk model.

本文致力于研究分多段分红的对偶风险模型及二维风险模型的破产理论，主要研究了分三段分红的对偶风险模型的折现红利的期望函数，并对带有扰动项的二维风险模型的破产概率做了研究。

This is an untouched measuring way. The cameras are calibrated in the way of RAC two steps, first. With the polynomial interpolation, the pictures catched from the steel plate are treated to detect the edge in subpixel with a cross window arithmetic operators, which can fit non uniform illumination, keep the edge character and do filter in a better way. Three-dimensional scenery could be rebuilt from the two-dimensional pictures with the methods of least square fitting and contradictorily clairvoyance. Thus, the distance and its variance of two points in the given position of the plate can be achieved. It is expected that this study can provide a new and useful tool to the research on the theory of distortion of line heating.

这种非接触的测量方式，采用RAC两步法对摄像机进行标定，然后对采集到的钢板图像进行分析处理，通过多项式插值的方法，采用具有保持边缘特征和滤波功能，且能适应非均匀照明的十字窗图像边缘检测算子进行象素级边缘检测，再用最小二乘拟合法和逆透视法对二维图像进行三维重建，便可测出钢板上给定点的距离及其变化值，以期为水火弯板的变形机理研究提供一种新的检测手段。

In this paper an algorithm of finite element modelling is discussed for elastic wave propagating in two dimensional media. Two analytical formulas of the initial motion and wave form of P wave are derived in time domain for a point force source directing vertically down as a function of time with a bell shape.

本文讨论了二维介质中弹性波有限元模拟的一种方法；导出了二维无界空间中集中力点源的理论初动表达式和位移波形表达式，并和相似情况下的有限元结果进行了比较；对用有限元方法算得的几个中小模型的节点位移进行了分析。

The complexes areneutral as shown by values of molar conductivity in aqueous solution, namely,〓 The crystal structure determinations show that, in complexes, metal ions werecoordinated by four nitrogen atoms and form slightly distorted square planar configuration,relationship between fluorene ring plane and coordination plane is similar to those betweenpeptide planes of β-folding in proteins. The complex molecules linked by hydrogen bonds formone dimension chain or two dimension network structure.

摩尔电导测定表明他们都是二氧四胺中酰胺氮去质子化后形成的产物。X-射线衍射晶体结构测定表明〓的铜、镍配合物的配位多面体都是稍微畸变的平面正方形，配合物分子中芴基平面与配位平面的关系类似于蛋白质β-折叠结构中肽平面之间的关系，配合物分子之间通过氢键连接成一维链状或二维网状结构。

Serein Metrology Co., LTD (former Shenzhen Serein Precision Machinery Co., LTD) once undertook the research and development for related sub-projects within National 863 Plan and was the pioneer high-tech enterprise to industrialize the three-dimensional laser scanning technology. Serein has a strong design and production capacity and provides many series precision measuring products with high quality.

思瑞测量技术有限公司的前身为&深圳市思瑞精密机器有限公司&，是我国最早将三维激光扫描技术产业化的高新技术企业，曾主持承担国家863计划相关项目的研究开发工作，具有很强的研发与生产能力，为中国市场提供了包括一维高度尺、二维影像与三维坐标测量机等在内的多种产品，产品品质优良，市场影响力深广。

Take the common platoon quadrat in the formula most typical enemy two-row as the example analysis plate two-dimensional platoon type whole optimization question, unifies Yu Liao the use, establishes reasonable mathematical model which the two-dimensional platoon type whole optimizes.

以常见排样方式中最典型的对头双排为例分析板材二维排样的整体优化问题，结合余料的利用，建立二维排样整体优化的合理数学模型。

D entropic thresholding method is a common image segmentation technology,it is suitable for the image segmentation of the object and background occupying the vast majority region of 2-D histogram,but this approach neglects the information of edge regions to the results of the segmentation.

二维熵的图像分割方法是一种常用的阈值分割技术，适合于对象和背景占据二维直方图绝大部分区域的图像分割，但该方法忽略了边界区域的信息对分割结果的影响。

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。