查询词典 asymptotic expansion

The Research on application of optimization problem in calculous ;2. In this paper, we mainly discuss how to teach calculous , such as limit of sequence of number, Taylor expansion and Fourier expansion, by using mathematical software.

围绕微积分学习中涉及数列的极限、函数的泰勒展开式和傅立叶展开式等几个基本方面，论述如何利用数学软件mathematica进行辅助教学，达到深刻而形象的理解微积分教学中较为复杂的数学概念及数学现象的目的，从而激发学生学习兴趣，促进微积分学习。

The effects of half expansion angle , expansion ratio and boundary conditions on performance of 2D micronozzle with half throat heitht 34 were numerically studied.

本文数值模拟喉部半高为34μm的二维微喷管，分别分析了固定进口及固定喉部尺度下扩张角、扩张比以及滑移边界条件对微喷管性能的影响，发现最佳半扩张角在20°-22°之间，而最佳扩张比为7。

The theory adapted to the demand of Hesperian scale expansion of higher education, and supplied an instruction about scale expansion in the argument of higher education developing direction for Occident, effecting the higher education's diversification.

它适应了当时西方社会高等教育扩大规模的要求，为当时欧美国家关于高等教育发展方向的论争提供了一个关于规模扩张的理论导向，对高等教育走向多样化有深远影响。

The Blazing Hippogryph was supposed to be a reward of the Wrathgate TCG expansion (UDI stated that Wrathgate Booster won't go into production) and the Wooly White Rhino is currently a reward of the "Icecrown" TCG expansion.

炽热角鹰兽可能会是Wrathgate 系列TCG的奖励（UDI表示Wrathgate Booster不会再投入生产），而雪白犀牛目前会是"Icecrown"系列TCG的奖励。

In the last chapter, on the basis of theories in paper [4, 5], the notions of strong mixing, weak mixing, generator and expansion of the variable-parametric dynamical system are introduced, it turns out that in variable-parametric dynamical system strong mixing implies weak mixing and then implies transitivity; it is proved that if and both are variable-parametric dynamical system, F conjugates with G , the members of F are communicate with each other and the members of G are also communicate with each other, what's more, they are both homeomorphism, then F is strong mixing implies G has the same properties; futhermore, we prove that F is strong mixing implies F Devaney chaos in the sense of modification in variable-parametric dynamical system and that F Devaney chaos in the sense of modification if and only if G Devaney chaos in the sense of modification when semi-conjugate with and they both are communicate and homeomorphism; at last, we illustrate that F has generator if and only if it has weak generator, and we also prove that if F is expansion, then F has generator.

在第三章中，我们在文[4，5]的基础上，提出了变参数动力系统拓扑强混合、拓扑弱混合以及变参数动力系统的生成子、扩张的概念；证明了变参数动力系统拓扑强混合蕴含拓扑弱混合，进而蕴含拓扑传递；证明了：如果，为两个变参数动力系统，F与G拓扑半共轭，且F两两可交换，G两两可交换，它们均为同胚映射，那么F拓扑强混合，则G也有同样的性质；本章还证明了变参数动力系统拓扑强混合蕴含F在修改的意义下Devaney混沌；在此基础上得出了：如果变参数动力系统与变参数动力系统拓扑半共轭，它们都两两可交换，并且它们均为同胚映射，那么F在修改的意义下Devaney混沌当且仅当G在修改的意义下Devaney混沌；得出了F有生成子当且仅当F有弱生成子；如果F是扩张的，则F有生成子。

In the second chapter, modefied Taylor\'s expansion method is studied for solving Fredholm-Volterra integral equations, several illustative examples are given to show the efficiency of the proposed method. More over, by simple algebra, the modified Taylor\'s expansion can also be used to solve integral equations with weakly singular kernel, and the corresponding accuracy is dramatically promoted.

第二章重点讨论了应用Taylor展开方法解Fredholm-Volterra积分方程，通过数值例子，表明了该方法的简单有效性，特别应用于具有弱奇异核积分方程获得了更高精度的解。

With some examples, the correlat ions between the thermal expansion coefficients of minerals and the types of cr ystal structures, the nature of chemical bonds, the valencies of ions , the interionic distances, the percentage ionic characters, the electronic conf igurations of ions and the chemical compositions are discussed and summarised . The crystal chemistry approach has been used in the calculation of the th ermal expansion coefficients for minerals with simple structures and composition s.

晶体化学方法是研究矿物热膨胀系数的有效方法，但由于矿物的热膨胀系数和晶体化学参数之间的定量关系尚未完全弄清，目前仅仅能对简单结构矿物的热膨胀系数进行计算，结构、成分较复杂的矿物的热膨胀系数计算尚缺乏好的晶体化学模型。

By adjusting the opening varies of the electronic expansion valves according to the exterior air temperature detected by a temperature sensor, the following is achieved: great heating/cooling efficiency irregardless of the operational conditions, a simple structure, and an air conditioner of smaller size, using electronic expansion valves to adjust the circulation speed of the exchange medium.

电子膨胀阀根据温度传感器检测的外界空气温度，调节其开启程度。得到高加热／制冷效率，而与运行状态无关。通过电子膨胀阀调节热交换介质的流速，得到一个结构简单、尺寸较小的空调器。

To find these memory mapped expansion ROMs during boot, PC BIOS implementations scan real memory from 0xC0000 to 0xF0000 on 2 kilobyte boundaries looking for a 0x55 0xaa signature, which is immediately followed by a byte indicating the number of 512 byte blocks the expansion ROM occupies in real memory.

为了在开机时找到这些记忆体映射的扩充唯读记忆体，PC BIOS 会扫描实体记忆体，从 0xC0000 到 0xF0000 的 2KB 边界中寻找 0x55 0xaa 记号，接在其后的是一个位元，表示有多少个扩充唯读记忆体的 512 位元区块占据真实记忆体空间。

RESULTS: The self-prepared 3-D external distractor was 30 g. The lengthener was built to provide 3-D suture expansion osteogenesis by changing the direction. The expansion bar could be moved about 2 cm in anteroposterior axes, 3.5 cm in perpendicular axes, 3 cm in coronal axes.

结果：自行研制的三维缝牵张器重量30 g，牵张杆前后向移动2 cm左右，上下方向移动3.5 cm左右，向外移动3 cm左右，牵张控制准确，三维变向简便易行。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。