查询词典 quasi-periodic

We have studied the variational pattern of track geometrical form due to wheel/rail forces under the quasi-static for operating of rolling stock, and also have studied the actions on elastic displacements of constraint rail due to the thickness and stiffness of track pad.

由轮轨力所引起的线路几何形态的变化规律；在假定轮轨力不变的情况下，又研究了轨底垫层的厚度和刚度对于约束钢轨弹性位移所起的作用；为确定轮轴的弯曲变形对轮轨关系的影响，同时建立了轮对有限元模型，计算了轮对承载状态所发生的弹性变形。

Track dynamics ; Rail pad ; Quasi high speed railway ; Vibration reduction

轨道动力学；轨下垫板；准高速铁路；减振

The research works are listed as followings: 1. The computing method developed with the Matlab software has been proposed to solve transcendental equation containing elliptical integral. With this method the dimensionless contact parameter, contact stress and deformation in different ceramic materials have been computed for the first time, and its the efficiency and reliability has been proved. 2. The internal speed and motions of ball bearings as well as relevant quasi-statics formulae are conducted.

本文以轴承拟静力学分析为理论基础，围绕着轴承的数字化设计和高速陶瓷球轴承的结构参数进行了相关研究，主要内容如下：提出基于软件Matlab为平台的计算方法，首次得到了不同陶瓷材料的接触应力和变形等以前不易计算的数据，验证了这种方法具有简便可靠、适合于轴承计算、易于普及等优点。

A trapezoid specimen with a quasi-uniform stress field is developed on the basis of the traditional damping experimental equipment.

在传统阻尼实验装置的基础上，开发了具有准均匀应力场的梯形等强度梁试件。

This paper proposes a class of Quasi-Cyclic Low-Density Parity-Check codes with high code rates, which is an efficient encoding algorithm due to the almost lower triangular form and simple structure of their parity-check matrices.

摘要该文设计了一种特殊的高码率准循环低密度校验码，其校验矩阵以单位矩阵的循环移位阵为基本单元，与随机构造的LDPC码相比可节省大量存储单元。

The reduced quasi-block tridiagonal matrix simultaneous correction algorithm based on LU decomposition is developed for interlinked distillation columns, which can successfully solve non-tridiagonal matrix caused by connecting stream or recycle stream of the column system.

提出了处理内联精馏塔系统的基于LU分解的压缩型拟块三对角矩阵方程组同时校正算法，解决了由于塔之间存在联接物流或回流而形成的非三对角矩阵方程的求解问题。

The first part presents the synthesis of trisection filters incorporating the frequency-dependent coupling to achieve a quasi-elliptic function response.

具有此类型零点的滤波器一般称为准椭圆滤波器。仅使用频率无关耦合特性的三元结构，通常只能产生一个传输零点。

Based on percolation theory , truncated Weibull distribution is used as the pore throat distribution function, a two phase and 3 dimensional quasi-static network model is established to simulate the primary oil displacement and secondary water flooding of reservoir cores.

结合逾渗理论，采用截断威布尔分布作为孔喉特征分布函数，模拟储层岩心的初次油驱过程和二次水驱过程，建立了油水两相三维准静态孔隙网络模型；通过模型计算与试验结果的对比，验证了孔隙网络模型的有效性。

In this paper, based on an improved POM model, by nesting the results of the HAMSOM model, a baroclinic quasi prognostic model is built for the Tsushima Strait.

在利用改进的POM模式的基础上，嵌套西北太平洋区域模式HAMSOM结果，建立1个日本海对马海峡海域斜压准预报模式。

In some people's view, TV series is a kind of quasi-art.

在某些人看来，电视连续剧是一种准艺术。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。