计算单元

Theoretical analysis shows that the accuracy of this method is between one-point quadrature and full integration. For flat element with minor warping, the method is in the same way as full integral calculation.

理论分析表明该方法的精度介于一点积分和全积分之间，对于翘曲小的单元该方法等同于全积分计算方法。

Owing to the complexity of CIMS' missions,the reliability modeling should adapt the production processes accurately.Conventional reliability model method can not reflect the time dynamic behavior of CIMS,so the multitask reliability model based on generalized stochastic Petri nets is established for a CIMS manufacturing shop with multiple missions and the process times of the machines with exponential distributions.Furthermore,analysis of GSPN model based on behavior expression and moment generating function is presented,then can compute the transfer functions.Finally,the multitask reliability can be easily obtained without the reachability graph of Petri nets,which measure can reflect the operating performance of the whole multitask CIMS more intuitively.

CIMS生产的复杂性要求其可靠性模型可以精确地反映生产过程，由于传统的可靠性建模方法无法兼顾CIMS的时间动态特性，所以针对一个复杂的有多个加工任务的CIMS制造单元，由于其机器加工工件的时间均为指数分布，则采用广义随机Petri网进行多任务可靠性建模，在此基础上基于Petri网行为表达式，将矩母函数思想引入其中，不必生成可达标识图就可通过计算模型的传递函数，进而得到整个系统的多任务可靠度，该可靠性指标可以更直观地反映具有多种加工任务的整个CIMS的运行性能。

RCC gravity dam.inhomogeneous multilaminate element.simulative calculation.concrete thermal parameter.back analysis.temperature field.stress field.and induced joint.

碾压混凝土重力坝，非均质层合单元法，仿真计算，混凝土热学参数，反演分析，温度场，应力场，诱导缝

The equations of dynamics for the balance are established by Kane's method, from which derives the characteristic equation of natural frequency by means of linearization of dynamic equations, and the six natural frequencies being developed according to the theory of vibration. The law of the six natural frequencies varying with mass of the upper platform and the stiffness of the elastic element are presented,and the Finite Element Method is employed to testify the validity of theoretical results.

基于 Kane 方法研究天平的动力学及模态，通过线性化动力学方程建立天平的固有频率方程，依据振动理论推导出并联天平的六阶固有频率及其对应的振型，同时研究了天平的六阶固有频率随敏感单元刚度系数及上平台质量的变化规律，并用有限元法验证理论计算结果的正确性。

Considering the actual need of hydro-structure design, one algorithm for drawing isoline map or nephogram is proposed in this paper. Compared with other algorithms, this algorithm is easy to implemente, and the increase of series of isoline will not result in the observable increase of the time for computing the isoline.

此算法依靠单元共边共点的特性保证等值线或云图的连续性，相对等值线追踪算法而言，此算法简单易行，而且实际测试结果表明等值线级数的增加不会导致其计算时间的显著增长。

In order to simulate the mechanical behavior of nonhomogeneous materials numerically, the traditional finite element method is improved in this dissertation and the finite element method with nonhomogeneous elements is developed.

为了适用于非均匀材料的数值计算，本文将传统的有限元方法进行了改进，推导了非均匀单元有限元方法。

For this nonlinear and time-dependent temperature field problem, two kinds of finite elements are presented here.

对于这类高度非线性的瞬态场问题，本文发展了两种一维温度管单元及其温度场的计算方法。

In the course of the whole bridge researches, used a orthotropic unit instead of lead rubber bearing.

在整桥模型的计算中，可将铅芯橡胶支座用一个正交各向异性材料单元来替代。

A very fast and efficient array pattern synthesis algorithm-SFFT is described in this paper. This algorithm is well suited for many synthesis problems of planar array antennas with periodic element spacing, particularly the large arrays.

介绍了连续快速傅里叶变换，该算法适用于辐射单元周期排列阵列的各种综合问题，尤其对大型阵列综合表述更简捷、性能更优良、计算速度更快。

Three dimension modeling technique includes three dimension finite element method, three dimension photoelasticity experiment method and modeling with other materials.

该技术包括三维有限单元计算数值模拟、三维光弹实验模拟和其它材料的工程实验模拟技术。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。