查询词典 on order

Second order incident boundary condition on fixed incident boundary is derived for numerical simulations, based on the cnoidal or sinusoidal motions of wave maker paddle, which shows that the prediction with second order incident boundary condition is more accurate than the prediction with first order incident boundary condition. 2 The analytical solution for higher-order Boussinesq equations is derived and its applicable range is discussed. 3 A 2-D fully non-linear numerical model using boundary element method is developed to obtain wave forces acting on rectangular obstacle. 4 The three-dimensional fully non-linear waves are studied in a numerical wave tank using finite element method.The studies on the coupled numerical model combined Boussinesq equations with Laplace equation are following.

非耦合非线性波浪计算模型：1 根据造波板做椭圆余弦运动或正弦运动速度，推导出数值模拟波浪水槽时固定入射边界上的二阶波浪入射边界条件，数值计算结果和实验结果的对比表明采用二阶入射边界条件对波面升高的预报比采用一阶入射边界条件对波面升高的预报更为精确；2 推导了波浪水槽造波板做正弦运动所产生波浪的高阶Boussinesq方程摄动展开解析解，讨论了该解析解的适用范围；3 对整个波浪水槽应用边界元方法数值模拟了波浪对物体的非线性作用；4 用有限元法求解三维Laplace方程模拟了三维完全非线性波浪水槽。

A third order ENO finite volume method for hyperbolic conservation laws on unstructured triangular mesh is introduced.In order to obtain the third order accuracy on spatial discretization,a weighted quadratic interpolation is constructed on every triangular mesh.Two point Gauss quadrature formula is also used on each edge of every triangular mesh and the third order TVD Runge-Kutta method is used for time discretization.The numerical order of convergence and the numerical result of a mesh 3 wind tunnel with one step are given.

摘 要 基于双曲型守恒律方程，对非结构三角形网格给出了一种ENO(Essentially Nonoscillatory Scheme)型有限体积格式，方法的主要思想是先对每一个三角形单元构造一个加权的二次插值多项式，而在计算交界面的流通量时采用了两点高斯积分公式以保证格式的整体精度，时间离散采用三阶TVD Runge-Kutta方法。

First, based on the mathematics model of comprehensive decision at present, the concept of evaluation function is introduced. Based on the thinking stability of decision-maker, the essential meaning of comprehensive decision model is discussed, therefore, and a new improved approach on the comprehensive decision model is put forward. Second, the mathematics model of interval number comprehensive decision is systematically discussed, and the ranking method of interval number based on the decision-maker's attitude is provided. Finally, the concept of valuation order relation is introduced, the valuation order relation of interval number and fuzzy number are systematically discussed in detail, it provides a new method to research the order relations of interval number and fuzzy number, therefore, these achievements can be applied in the intelligent system.

首先，针对常用的综合决策模型，给出了评判函数的概念，讨论了综合决策模型的本质意义，指出决策者的思维应具有稳定性，从而给出了综合决策模型的一种改进方法；第二，在此基础上，给出了区间数的综合决策模型，并详细讨论了基于决策者的决策心态的区间数的排序方法；第三，引入了赋值序关系的概念，详细讨论了区间数和模糊数的赋值序关系，为区间数和模糊数的序关系研究提供了新的思路与方法，这些均有望在智能系统中得到广泛的应用。

Aiming at this problem, the concept of the second order power spectrum was proposed based on the characteristic of the amplitude tune with periodical notch spectrum in thin layer and theoretically researched. The corresponding relationship between the thickness of thin layers and the maximum value of second order power spectrum was established. The theoretical criteria and method for the thickness estimation by second order power spectrum were given. The second order power spectrum map is made by the energy relationship between the thickness of thin layers and the second order power spectrum, and the time responding to strong energy on the map is the time of thin layer.

为此，从薄层振幅调谐具有周期性陷频谱特征出发，提出了二阶功率谱的概念，从理论上对薄层的二阶功率谱特征进行了研究，建立了薄层厚度与二阶功率谱极大值之间的对应关系，给出了利用二阶功率谱进行薄层厚度预测的理论依据和方法，即根据薄层厚度和二阶功率谱的能量关系制作二阶功率谱图，图上强能量团对应的时间即为薄层时间厚度。

On a consultation held in our printing-office among his friends, what he should do in this conjuncture, it was proposed to elude the order by changing the name of the paper; but my brother, seeing inconveniences in this, came to a conclusion, as a better way, to let the paper in future be printed in the name of BENJAMIN FRANKLIN; and in order to avoid the censure of the Assembly, that might fall on him as still printing it by his apprentice, he contrived and consented that my old indenture should be returned to me, with a discharge on the back of it, to show in case of necessity; On a consultation held in our printing-office among his friends, what he should do in this conjuncture, it was proposed to elude the order by changing the name of the paper; but my brother, seeing inconveniences in this, came to a conclusion, as a better way, to let the paper in future be printed in the name of BENJAMIN FRANKLIN; and in order to avoid the censure of the Assembly, that might fall on him as still printing it by his apprentice, he contrived and consented that my old indenture should be returned to me, with a discharge on the back of it, to show in case of necessity; and, in order to secure to him the benefit of my service, I should sign new indentures for the remainder of my time, which was to be kept private.

他的许多朋友，在印刷所中开会讨论，这件案子该怎样办。有人建议改变名称来规避这个命令；但是我的哥哥认为这个方法不大合适，最后决定一种较好的办法，让未来的这张报刊发行时用拜雅明富兰克林的名字；但是为避免议会的责罚，如果仍旧以他的学徒刊行还是不行，最好办法是暗地里把旧合约给我，合约的后面注明作废，这样一旦有事就可以给人家看了。他的许多朋友，在印刷所中开会讨论，这件案子该怎样办。有人建议改变名称来规避这个命令；但是我的哥哥认为这个方法不大合适，最后决定一种较好的办法，让未来的这张报刊发行时用拜雅明富兰克林的名字；但是为避免议会的责罚，如果仍旧以他的学徒刊行还是不行，最好办法是暗地里把旧合约给我，合约的后面注明作废，这样一旦有事就可以给人家看了。但是为保护我为他工作的利益，剩下的年限我再签一张新合约，这是私自保存的。这是一个下等的计策；但不论怎样，这个计策立即执行了，而这份报依此刊行，用我的名字已有几个月了。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

Currently, more than half the commercial jetliners operating in China are made by Boeing, and some 450 more are on order.

目前，一半以上在中国经营的商业客机是由波音公司，还有大约450多对的顺序。

Worse, there is a huge supply of new ships on order and due off the slipways over the next four years.

更糟糕的是，未来四年将出现大量的新船供给，包括订单上的和即将交付使用的。

Worse, there is a huge supply of new ships on order and due off the slipways over the next four years.

更糟糕的是，新船只在接下来四年内的供应量却很大，包括预订的或者存于船台已到期的新船。

This text go to to new course high school physical teaching material go on, analyze, sum up every chapter of knowledges order first, put the knowledge structure of every chapter in order out, and every knowledge order in whole high school physical permutation order of teaching material ordering, putting high school physics whole knowledge structure chart in order every knowledge according to new course on this basis.

本文对新课程下高中物理教材进行分析，先归纳各章节的知识点，整理出各章节的知识结构，并在此基础上根据新课程中各知识点在整个高中物理教材的排列顺序将各知识点整理成高中物理整体知识结构图。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。