查询词典 atomic element

In this paper, some problems that have to be faced with in the application of SPLL to static synchronous compensator are analyzed, and two improvements of SPLL are proposed. The first one is removing the filtering function of lead-leg element into the prepositive delayed signal cancellation element to remedy the difficulty in deciding its parameters; the second one is directly taking the post-PI regulation output of q-axis voltage as error signal of phase to call off the forward integrating element.

分析了软锁相环应用于静止同步补偿器时面临的若干问题，并提出了2方面的改进方案：一是针对超前/滞后环节参数选取困难的问题，将其滤波功能转移到前置延时信号消除环节中；二是q轴电压经PI调节的输出直接作为相位的误差信号，减少了前向积分环节。

Element approach is employed, and the amount of each component holdup is calculated element by element with a proper void fraction model.

将换热器分解成若干微元，选用恰当的空泡数学模型，计算各组分在换热器中的滞留量。

This paper discusses the displacement counter-calculated method, the in-out boundary element method, the combination boundary punition element with finite element, the time series analyzing and the Grey system theory on pressure and displacement of soft rock tunnel support.

论述了软岩巷道围岩及支护压力与位移计算和预报的位移反算方法、内外边界元方法、边界罚单元与有限元结合方法以及时间序列分析方法和灰色系统理论方法并结合该5种方法在岩土工程中的应用，探讨了它们的可行性和实用价值，为地下工程软岩巷道的支护和设计提供了重要的参考

According to research into the regional geochemical characteristics of the northern Xinjiang (they consist of abundance valve and vary coefficient of element, distribution of element among stratum and magmatite, regional anomalous geochemical characteristics), the author discuss vary regular pattern of element and geochemical anomalies among different stage of stratum and magmatite in the northern Xinjiang.

摘要对新疆北部区域地球化学基本特征―元素的丰度值、变化系数、元素在地层及侵入岩中的分布规律、元素共生组合、区域地球化学异常特征的研究，阐明了新疆北部区域上、不同时代地层及岩浆岩中元素及地球化学异常的变化规律。

This paper focuses on four important aspects as follows. The first one is the establishment of variational quations which provides the mathematics theories for the finite element method of HMT; the second one is for the study of scalar/node and vector/edge finite element method; the third one is about how to solve faster for the large-sacled matrix system of scalar/node and vector/edge finite element; and the last one is achieving the forward modeling with high precision of HMT method.

主要包括四部分：建立与高频大地电磁法边值问题相等价的变分问题，为有限元数值计算奠定数理基础；标量/矢量有限元方法的研究；加速标量/矢量有限元矩阵系统方程迭代求解技术的研究；实现高频大地电磁参数精确快速正演模拟的研究。

A 3-D finite element system of lumbar L4-5 was sectionally constructed with Mimics software system by lumbar CT images. The system was turned into a finite element system of degenerative lumbar by modified it's material parameter. The lumbar rotatory manipulation was decomposed by principium of manipulation. The parameter of mechanics was analyzed with the finite element system.

使用腰椎CT片，以Mimics软件系统逐层重建L4-5三维有限元模型，通过设定结构的参数完成退变腰椎间盘模型将向右侧旋转的坐位腰椎旋转于法进行分解，把各项力学参数代人模型进行计算分析即时显示于法作用时退变腰椎间盘的内在应力和位移的变化。

The finite element analysis models of linear elastic fracture with 20-nodes substance element and cracking singular element were established.

提出采用20节点等参单元、裂缝奇异单元，建立了铺装层线弹性断裂力学有限元模型，通过裂缝尖端应力强度因子的计算，研究了钢桥面沥青铺装层破坏情况对裂缝扩展的影响。

The examples given have proved the advantage of the Boundary Element Method. In the analysis of the fracture mechanics using Boundary Element Method, the calculation model of one-quarter singular element has been established, and has been proved its validity.

把边界元法应用于线弹性结构断裂分析中，建立了裂尖奇异区分析的四分之一奇异元计算模型，算例表明，用四分之一奇异元分析断裂力学问题是一种有效的逼近裂尖场的数值方法。

In chapter 4,on the basis of chapter 3,a new formulation of hybrid/mixedsingular plate element based on Reissner's plate theory is set up,and 4-node arbitraryquadrilateral hybrid/mixed singular bending plate element formulas including theeffects of transverse shear deformation is derived,then by the use of this method,alarge quantity of numerical computations are carried out,at the same time,the resultsare compared with theoretical solutions and the results obtained by other singularfinite element methods.

第四章 在第三章的基础之上，建立基于Reissner型板理论之上的杂交/混合奇异板单元列式，推导出了考虑剪切效应的四节点任意四边形杂交/混合奇异弯曲板单元公式，并进行了大量的数值计算，同时与理论解析解和其它有限元解进行了比较，计算结果表明：本文提出的杂交/混合奇异板单元方法是可以用于计算含裂纹平板弯曲应力强度因子的一种高效、可靠、简便易行的方法。

For the first time the endplate bolted connection's finite element model with the original crack is set up by the singular element, the fracture problem study is introduced to the finite element analyzing. The J integral value and stress intensity factor of the crack tip are calculated by the ANSYS Parametric Design Language program, and the developing of original crack is judged from the K Rule and J Integral Rule.

第一次通过构造奇异单元来建立带初始裂纹的节点有限元模型，将断裂问题的研究引入到端板螺栓节点的有限元分析中，并通过ANSYS软件中Parametric Design Language编程来计算裂纹尖端的J积分值、应力强度因子，根据断裂力学中的K准则、J积分准则判断初始裂纹是否会重新启裂。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。