查询词典 phase boundary

In this paper, we demonstrate that, based upon boundary conditions and the uniqueness theorem of domain decomposition method for boundary problem of Helmholtz equation, Snell's law may also be derived without adopting phase-matching condition.

该文利用Helmholtz方程边界问题的边界条件和域分解理论，研究了静态面电荷对电磁波在介面传播的影响，理论上得到了一些有物理意义的结果，这对认识电磁波在介面的传播特性有一定参考价值。

At first, preprocessing with the image pyramid and diffusion-filtering technology; then abstracting the boundary-outline information; carrying on the logarithmic coordinate transformation of the abstracted boundary-outline information to get bar chart of the logarithmic coordinate; calculating the value of Cs to get all the phase match points; calculating the value of the degree of approximation to judge the shape matching.

本发明涉及一种基于Shape Context的人脸形状匹配方法，首先采用图像金字塔及扩散滤波技术进行预处理；再利用Canny边缘检测算法和轮廓提取算法提取边界轮廓信息；对提取的边界信息进行对数极坐标变换，得到对数极坐标直方图；通过计算Cs值，获得所有相匹配点；计算相近似度值，进行形状匹配判断。

It separates the network into symmetrical parts and unsymmetrical parts,synthetically uses sequence compo nents an d phase components.In the sequence domain,it equals the symmetrical parts to its boundary nod es;in the phase domain,with the po lym orphic calculationtechnique,it deals wi th all kinds of faults directly without huge calculating work as it is in the conventional phase compo nents methood.The example shows the advantages of this improved method.

该方法以相分量故障处理方法为依据，在序坐标下化简对称部分，等效到其边界节点，在相坐标下对化简后的网络处理各种简单和复杂故障，采用多态计算技术，以矩阵变换代替传统的数值方程的计算，避免了相分量法计算量大的缺点。

In the theoretical calculation, the direct calculating method of the high pressure phase diagram of ternary system was worked out on the basis of the boundary theory of phase diagrams and the principles of the calculation of high pressure multicomponent phase diagrams.

在理论计算方面，根据相图的边界理论和多元体系高压相图的计算原理，提出了直接计算三元体系高压相图的方法和计算过程。

The beneficial effects of phosphorus mainly arise from the suppression of diffusion along grain boundary and the improvement of grain boundary δ-phase.

磷的有益作用主要来自于抑制晶界扩散和改善晶界δ相。

The case of uniform illumination is simulated and it is found that the method can recover Zernike coefficients of the original phase well while avoiding complicated boundary condition and reducing computation time, and furthermore the root-mean-square value between the corrected phase and the original phase is acceptable even when noise is added.

对均匀照明的情形进行了仿真，发现该方法不仅可以避免复杂的边界条件，减少运算时间，而且还能够较好地恢复出原始波前的泽尼克系数，即便在加噪的情况下，修正相位与原始相位的均方根误差也在可以接受的范围内。

In Chapter 4, Short-time dynamic behavior of two-dimensional fully frustrated XY model near the Ising-like phase-transition temperature is studied with resistively shunted junction dynamics. The transition temperature and the dynamic and static critical exponents are estimated under both a periodic boundary condition and a fluctuating twist boundary condition using the short-time dynamic scaling analysis.

第四章应用电阻分流结动力学方法研究了完全阻挫XY模型在Ising型相变温度附近的短时动力学行为，运用短时动力学标度分析方法，我们得出了该模型在周期性边界条件下和涨落扭转边界条件下Ising型相变的临界温度和各种临界指数。

Results of EBSD show that most of the reversed austenite in the steel treated by QT distribute along the grain boundary, but in the steel treated by two--phase region heat treatment the austenites distribute uniformly along all kinds of boundaries, especially also along the lath martensite boundary in the grain, so the cryogenic toughness can be also improved even the amount of austenitic is lower than that in the steel treated by QT process.

EBSD结果则表明：经两相区处理，回转奥氏体不仅在晶界和板条束界形成，也在晶内的板条界上形成，因此即便在其含量低于淬火+回火处理的条件下， 9Ni钢的低温韧性也有明显提高，证明回转奥氏体的分布也是影响9Ni钢低温韧性的一个主要因素。

Pitting corrosion developed continuously by means of self-catalysis owing to the existing of passive-active cell in pitting corrosion hole. The Al2Cu phase was found on the grain boundary, and a poor Cu element area was observed nearby grain boundary.

在蚀孔内形成了钝化-活化原电池，使点蚀以自催化的方式不断发展。L401合金中α-Al相在吴占军西安理工大学硕士论文晶界析出A12Cu，在晶界附近产生贫铜区。

Phase-lagged cyclic boundary condition is implemented by a novel method in conjunction with the developed sliding interface technique to accurately simulate the arbitrary pitch ratio rotor/stator interaction without any modifications of the physics of the problem. It's for the first time to compose the computational area into one structured grids including both rotor/stator of centrifugal or axial turbomachinery with arbitrary pitch ratio. This method can eliminate the iteration of boundary conditions on the sliding interface and calculate the unsteady flow within rotor and stator simultaneously.

为了能够在较小的计算区域内不改变叶型而真实地反映出任意栅距比时的内部非定常流场，并避免近似仍采用相位后滞周期性条件，结合本文发展的网格技术，给出了一种新的实施方法，首次将动、静叶片数不等的离心式/轴流式叶轮机械转子、静子计算区域组合在一套结构化计算网格中，动/静叶排间的滑移界面完全按内场处理，避免了每一时层内，滑移界面处边界条件的迭代计算；并保证了每一时层，滑移界面处流动参数的守恒特性。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。