查询词典 pascal hexagon

Given a hexagon circumscribed on a conic section , the lines joining opposite polygon vertices meet in a single point

已知一个六边形外切于一条圆锥曲线，那么连接这个六边形相对顶点的三条线交于一点。

Hang Zhou JiaNuoDe Hardware Tools Manufacturing CO.,LTD, Introduces Taiwan spheroidization stove two, and the cold-drawing equipment, the specialized production tool uses hexagon bar iron, Fang Gang, a cutter bar Yuan steel, spheroidize through this equipment cause each kind of fine line steel not to have the decarburization, degree of hardness evenly, The stable performance is good, may produce each kind of steel grade impact extrusion phosphorus to saponify the fine line.

杭州嘉诺德五金工具制造有限公司，引进台湾球化炉二条，及冷拉设备，专业生产工具用的六角钢、方钢、刀杆元钢，通过该设备球化使各种精线钢无脱碳、硬度均匀、稳定性能好，可生产各种钢号冷挤压磷皂化精线。

Three different planar structural modes of 5 approximants have been put forward by using pentagon, decagon, flat hexagon and boat-shape respectively.

从高分辨像出发，分别用十边形，五角形以及扁六边形和船形构筑了五种十次准晶近似相的各三种平面结构模型。

Liu Hui, a mathematician of the Three Kingdoms period, claimed that "3 to 1" was rather a ratio of the circumference of the inscribed hexagon with the diameter of the circle than a ratio of the circumference of the circle with the diameter.

刘辉说，数学家的三国时期，声称" 3比1 "是相当比例的周长与登记六边形直径的圆圈比比圆周长与直径。

And the thesis is divided into 4 parts.In the first part, the development of technology on Adjustable Speed AC Dirve is introduced. And the theory of DTC is analyzed. Besides the two classic DTC strategy, the hexagon flux track and approximate circle flux track controlling system, the thesis introduces some DTC strategies modified and some new controlling arithmetics.

论文共分为四个部分：第一部分介绍了交流调速技术的发展，分析了异步电机直接转矩控制的基本原理，除六边形磁链和近似圆形磁链两种经典的DTC控制之外，还介绍了改进型DTC及其他新型的控制算法。

Ancient Chinese architecture uses a variety of shapes: the square, rectangle, triangle, hexagon, octagon, dodecagon, cross, circle, and semicircle.

中国古代建筑采用多种不同的外形：正方形、长方形、三角形、六角形、八角形、十二角形、十字形、圆形和半圆形。

The main contributions of this dissertation are In chapter 2, we propose a scientific visualization system modal which is based on large-format display technology and Client-Commware-Server structure. In chapter 3 and chapter 4, we accomplish two large-scale scientific visualization systems. In chapter 5 and chapter 6, we propose HFFT on hexagon and parallel dodecahedron domains, and reduce the computational complexity from O and O to O and O . Lastly, we propose a parallel HFFT on distributed memory computers.

本文的主要贡献如下：提出了使用大屏幕显示技术、适用于大规模科学计算可视化系统的Client-Commware-Server模型；实现了油藏数值模拟和分子模拟两个大规模科学计算的可视化系统；给出了二维三方向六边形区域、三维四方向十二面体区域上的HFFT算法，将变换的计算复杂度分别从直接计算的O和O量级降到了快速算法的O和O量级；最后，本文给出了一种基于分布式存储的并行HFFT算法，并对影响、提高并行算法的若干因素进行了分析。

In this dissertation we propose a set of fast algorithms for computing the DGFT (Discrete Generalized Fourier Transforms) over the hexagon domains and the parallel dodecahedron domains and give the parallel implementation on Linux clusters.

本文在理论上的主要贡献就是利用多色排序、区域分解和多重网格的思想，设计了二维三方向平行六边形区域和三维四方向平行十二面体区域上广义离散傅立叶变换的快速算法并给出它在PC Linux机群上的并行实现。

Wang Shu-Yun, Liang Xue-Zhang, Sun Yi, Linear Summation of double Fourier series on a parallel hexagon domain, J.

王淑云，梁学章，孙毅，平行六边形域上二重Fourier级数的线性求和，吉林大学学报， Vol.46， No.5(2008)，

An equiangular hexagon has area 117 3. The lengths of its six sides are, in order

一个等角六边形的面积为 117 3，而它六条边的长度依次为12、x、12、x

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。