查询词典 quasi-permanent

The housing problem is one of the major problems in the process of China's urbanize housing, as a quasi-public problem, can't be fully distributed and effectively supplied through market mechanism.

摘 要：住房问题是我国城市化进程中出现的主要问题之一。

We found that there is a V-shaped second threshold of quasi-periodic which agrees with our simulation result.

而从实验与模拟，我们都发现从稳定到不稳定间的第二阀值对腔长作图是一个V形的曲线。

This is an intoxicating world of art, skillful watercolor techniques attractive - pleasing colors are transparent; moisture control, with plenty of clever arrangements between deliberately and arbitrarily; color thin, thick, stacked, woven generate the rhythm of sound choir; Dianran hook brush pen, compact quasi-steady, vacuousness of Health to produce a very strong expression; images a sense of sunlight, air and create a sense of even more skill.

这是一个醉人的艺术世界，娴熟的水彩画技巧引人入勝――颜色透明得令人愉悦；水份的控制，留白的巧妙，安排在着意与随意之间；色屋的稀薄、浓重，相叠、交织产生音诗班的节奏；用笔点染勾擦、精巧準稳、虚实相生，产生很强的表现力；画面阳光感、空气感的营造更显功力。

For the first patern, elastic dynamics is adopted to study the steady state rolling contact, elastic dynamics incorporating with rigid dynamics is adopted to study the non-steady state. For the steady state, the analytical solution is obtained, and for the non-steady state, the variational formulation to solve the problem numerically is derived For the later patern, the function type friction coefficient is introduced. On the basis of the quasi-stastic theories of constant friction coefficients, both the exact theory and the simplified theory of the function type friction coefficient are established, the computer programms for both the theories are also made out. Using the function type friction coefficient, Shen-Hedrick-Elkins theory's application range is extended to large creepage .

对于速度对接触体力学特性的影响，本文采用弹性动力学方法和弹性动力学与刚体动力学相结合的方法分别对稳态和非稳态两种情况进行了研究，得到了稳态情况的解析解，给出了对非稳态情况进行数值求解的变分公式；对于速度对相关物理量的影响，本文主要讨论了速度对摩擦系数的影响，在滚动接触准静态理论的基础上引进了函数型摩擦系数，建立了函数型摩擦系数的滚动接触准静态精确理论和简化理论，并分别编制了相关的计算程序，还用函数型摩擦系数将简便的Shen-Hedrick-Elkins理论的适用范围扩展到大蠕滑区。

The quasi-Newton iterative method in optimization is used to solve the numerical solution of this variational problem.

该模型最终由最优化领域中的拟牛顿迭代法实现数值求解。

With three displacement sensors, an approximate algorithm derived from vector product was given to measure the pendulum angle of quasi-taper swinging movement.

借助3个位移传感器，利用矢量积推导出一种近似算法，实现了准圆锥摆运动中摆角的测量。

GPS ; quasi-geoid ; normal height ; precise model ; isoline of height anomaly ; deflection of the vertical

GPS ；似大地水准面；正常高；精化模型；高程异常等值线；垂线偏差

With the artificial bogie crawl wave s as lateral vibrating source and the irregularity function presented by former Soviet Union as vertical vibrating source, results of stochastic analysis on space vibration of the quasi high speed train track time varying system are obtained.

以准高速列车构架人工蛇行波及前苏联规律性的竖向不平顺函数为横向及竖向激振源，作准高速列车－轨道时变系统空间振动随机分析。

Derive the requirement to strain and displacement of Patch Test. Give the relationship between weak form of continuity equation and the Patch Test, through which the hybrid element method and quasi-conform element method are analyzed. Refined direct stiffness method and generalized conforming elements are also analyzed about why they can pass patch test. At last, as an example of using the requirement of patch test for displacement, improved the BCIZ Element.

得出分片试验对位移函数和应变函数的要求，这些要求便是一个好的有限元法所应保证的；分析了几何方程弱形式与分片试验的关系，借此分析了杂交元、拟协调元如何满足这些要求，以及在满足这些要求的同时产生的对其他条件的影响；分析了精化直接刚度法、广义协调元和双参数法如何保证分片试验的满足；最后作为位移条件的应用例子，改进了BCIZ元。

The calculation based on the quasi conforming element method is the exact solution of generalized compatibility equations and satisfies the weak continuity requirement naturally,and in the calculation,which does not need satisfy stress equilibrium conditions,the calculating process of the matrix's inverse is simplified.

拟协调元不需要应力满足平衡条件，简化了矩阵求逆计算，容易得出应变的离散精度，因此可以解决常规有限元难以适应的领域，对计算力学发展起着重要的作用。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。