格点

It is shown that the mechanical properties including Young's modulus, tensile strength, critical strain and stress under buckling can be enhanced with the decreasing of intershell spacing. The shear strength can be enhanced by 2-3 orders of magnitude when the intershell spacing is reduced to 20%, which is also dependent on commensuration. Zigzag-type carbon nanotubes have higher shear strength. The axial stress in tubes when the load transferring from outmost tube to inner tube is observed as well.

研究了单壁纳米管束横截面的六方化失稳现象，给出各种管径的面内压力－应变关系曲线；每条曲线都给出一个明显的拐点而且有很强的非线性；线弹性模量与参考构形有关，也受管直径的影响；分析了管束横截面的晶格不稳定性特征，表明晶格的缺陷能够明显的减小临界值；模拟了在不同应变下纳米管束对静水压的反应，发现不同压力下的截面形态不同，在很高压力下相邻管之间会形成化学键。

Without meaning any disrespect to the memory of Congreve, it may be observed that there are many questionable points of physics in Congreve's patent (even given the knowledge of physics of his time), and that his prose is astonishingly bad.

没有意义任何不敬的记忆康格里夫，可以看出，有许多值得怀疑点物理康格里夫的专利（即使考虑到物理知识的时间），他的散文是惊人坏。

It provided a correct and reasonable mathematical model for the analysis of the ultimate bearing capacity and crankle stability of the thin-walled structure.

论文在比较了两种运动描述方法（完全拉格朗日法和更新拉格朗日法）异同点并分析了非线性几何关系及大变形下的弹性物理关系的基础上，基于增量虚功原理推导了几何非线性空间梁元单元切线刚度矩阵，采取分模块形式，分别表示了轴力、弯矩、双力矩对几何矩阵的贡献；通过球面显式荷载增量迭代式弧长法求解方法编制程序，很好地实现了几何非线性增量荷载的自动步长选择及全过程跟踪，为薄壁杆系结构的极限承载力分析和弯扭失稳分析，提供了较为精确合理的分析力学模型。

For the single objective optimization, the decomposition and coordination method is adopted to build the decomposition and coordination model according to the existing sub-area division conditions of power networks. Then using the Augmented Lagrange method, the minimization problem of decomposition and coordination model can be changed to the saddle point problem of augmented Lagrangian function. Finally, the so called auxiliary problem principle is selected to decompose variables as well as the functions. This transforms the voltage and reactive optimization problem of the wholenetworks to some sub-problems in some sub-areas.

对于单目标无功电压优化，根据实际电网分区情况，采用分解协调法复制各分区的边界节点，建立分解协调模型，采用增广拉格朗日法将求分解协调模型的极小值问题转化为求增广拉格朗日函数的鞍点问题，然后采用辅助问题原理分解变量和增广拉格朗日函数，从而将全网无功电压优化问题分解为多个分区的分布式并行优化问题。

In theory, firstly, the numerical simulation methods, such as the boundary element method, the finite difference method and the finite element method, were utilized to calculate the distribution of electric field intensity and potential of the electron-gun system, the focusing system and the whole equipment, respectively. Then, the trajectories of the electron-beam were traced by using of the Runge-Kutta method and the Monte-Carlo method associatively. The point spread function was also calculated.

在理论分析中，先后采用边界元方法、差分方法、有限元方法等科学数值计算方法，编制程序，对X射线源的电子枪发射系统、聚焦系统以及发射系统与聚焦系统的组合系统等的电场分布进行了严格的计算，在准确求得各系统电场内各个剖分点的电场场强、偏导数等参量的基础上，采用蒙特-卡罗模拟方法和不等距龙格-库塔方法相结合，追踪由LaB_6单晶阴极表面发射出的大量电子束在电场内的运动轨迹，求出点扩展函数，并根据点扩展函数的优劣，反复调节、大量计算对比，挑选出X射线源最佳的电极结构及其组合。

Pvt. Roger Foehringer of the artillery was attached to the 99th, billeted on the outskirts of Büllingen, Belgium. At 0700 on December 16, he was put to work carrying a case of grenades up a hill to a machine-gun pit.

列兵罗格·弗瑞英格所属炮兵部队随同第99师驻扎在比利时巴林根镇郊外。12月16日7点，弗瑞英格被派去给一处高地的机枪阵地运送一箱子手榴弹。

They modeled continuous space and time as a four-dimensional array of points--the lattice--and confined the quarks to the points and the gluons to the links between them.

他们用一个四维阵列点——也就是晶格——来模拟连续的空间和时间，把夸克限制在点上、把胶子限制在点之间的连接上。

In addition to creating zone of stability in the Moon's orbit in which to build permanent space habitats, the Lagrange librations points have a unique geometry, such that three of the points form an equilateral triangle and two of those three points form congruent equilateral triangles with the Earth and Moon.

此外，可以在月球的轨道创造稳定区域，来建立永久性的太空栖息地。拉格朗日点有一个独特的几何形状，例如有三个点（L3、L4、L5），形成等变三角形。而这三个点中又有两个（L4、L5），和地球月亮构成两个等边三角形。

Later, playing to more than 40 class, only to listen to others, dark, animal husbandry练级much faster, only to wash into the dark, animal husbandry, to 60, immediately wash back to the sacred, there is no trace of nostalgic, I remember that unions once again RAID End, listening to my friend that the battlefield It's fun, we want to see, friends say, the sacred pastors into useless, not to kill, let me wash into the dark, animal husbandry, the time in front of the priest trainer Orgrimmar hesitated for a long time, just like in the hesitation, not to set foot on this road, as if following their own path on the road is no longer pure, no longer sacred, and some people can not understand these feelings now, after half an hour hesitated, and finally points down, points from the dark, animal husbandry talent at the moment, his heart in the blood, the end point is also very tense, very self-reproach, as if a child has done wrong.

后来玩到40多级，才听别人说，暗牧练级快得多，才洗成暗牧，到了60，马上又洗回神圣，没有一丝眷恋，记得又一次工会RAID完，听朋友说战场很好玩，就想去看看，朋友又说，神圣牧师进去没用，不能杀人，让我洗成暗牧，那个时侯对着奥格瑞玛的牧师训练师犹豫了很久，就好像在犹豫，要不要踏上这条道路，仿佛踏上道路之后自己就不再纯洁，不再神圣了，有些人无法理解这些感受吧，犹豫了半个小时之后，终于点了下去，点起暗牧天赋的那一刻，心在滴血，点完了也很紧张，很自责，好像一个做了错事的孩子。

In consideration of the structural characteristics of a chessboard pattern that the pixels in the images are central symmetrical for the points of intersection and antisymmetric for the lines of intersection of every two adjoining square panes, the precise coordinates of feature points can be decided by calculating the symmetry index and antisymmetry index for every pixel.

该算法巧妙地利用棋盘格图像的像素点相对于方格交点对称、相对于方格交线反对称这一特点，计算交点附近区域每一像素点的对称度和反对称度，并以此为依据来判定特征点的准确位置。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。