单元的

In this paper,strain and stiffness matrix of isoparametric element with eight nodes and hexahedron are derived in detail.

推导了八节点六面体等参单元的应变矩阵、刚度矩阵，对该单元的位移解收敛性和畸变敏感性进行了分析。

The calculation accuracy and the calculation efficiency of hexahedron mesh generated by author are higher than tetrahedron element.

所剖分的六面体单元的－计算精度和计算效率都高于四面体单元。

Similarly,in Chapter 4,we have successfully synthesized a novel starburst alkynyl-bridged macromolecule constructed with two kinds of functional groups,in which perylene imide structure is used as the arms and truxene structure as the core.

第四章中，采用合理的方案，成功合成了具有苝酰亚胺结构臂单元和Truxene核单元的双色团体系星状化合物。

In order to realize the miniaturized frequency selective surface, a new miniaturized-element frequency-selective surface is presented by bending the edge of square loop aperture into the inner space to lengthen the resonant length.

摘 要：为了实现频率选择表面单元的小型化，通过在方环单元的内部空间中弯曲方环边长来增加谐振长度，设计了一种新型小型化频率选择表面。

In computer programming, to copy from locations in main storage into locations in the same main storage.

在计算机程序设计中，将主存某些单元的内容复制到同一主存中的其它单元中去。

The element stiffness matrix of this variable section beam is derived based on principle of virtual displacement.

对圆锥形变截面梁单元进行了分析，采用有理函数的位移模式，利用虚位移原理，推导出该变截面梁单元的刚度矩阵

Prepared by the three-dimensional finite element beam element of the element stiffness matrix calculation program, the 6-DOF nodes.

用matlab编写的，有限元三维梁单元的单元刚度矩阵计算程序，各节点6个自由度。

Making use of unit stiffness matrix of the lead rubber bearing, obtained nine material constants of the orthotropic material unit by using back analysis.

利用铅芯橡胶支座的单元刚度矩阵，反分析出其作为一个正交各向异性材料单元的九个材料常数。

Moreover, to get more effective control over the mesh size in the interior of the surfaces, an interactive control approach is adopted.

同时，为了加强对曲面内部单元的尺寸控制，采用了交互控制曲面内部单元尺寸的方法。

Use the cubic function to be the displacement funtion, then base on the energy variation principle, the natural vibration equation is derived, which considers the pressure force and the boundary conditions of the compressed bar.

采用三次函数作为压杆单元的位移函数，基于能量变分原理，构造了一种可以考虑初始内力及边界条件的压杆单元。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。