几何结构

Delay differential equations; variational structure; Minimax theory; Morse theory; multiple periodic solutions; subharmonic solutions; Z_p geometrical index

基础科学，数学，数学分析时滞微分方程；变分结构；极小极大理论； Morse理论；多重周期解；次调和解；广义Z_p几何指标

Based on full-probability,a new solving method for probability density of natural frequency of a stochastic truss is proposed.

0引言在许多工程实际中，结构的各种物理、几何参数的随机性是客观存在的且是不能忽视的。

Secondly, According to the sub-pixel structure characteristic, the potential of deriving vegetation fraction from normalized difference vegetation index using the TM data and resorting to "Dense Vegetation Model" and "Nondense Vegetation Model", is studied in an area in the south of Yichang.

本文首先对TM影像进行了几何纠正、辐射校正、大气校正；然后根据混合像元的结构特征，利用TM数据从植被指数中采用"等密度模型"和"非密度模型"提取了宜昌南部地区的植被覆盖度。

First, FEM with nonhomogeneous elements is used to analyze the fracture problem of two dimensional FGM strips with inner cracks or edge cracks in the plane strain condition. The influences of geometric parameters, material graded modality and nonhomogeneity constant of the structure on the stress intensity factors at crack tips are investigated.

首先，本文采用该方法研究了平面应变状态下，含有内部裂纹和边裂纹的二维功能梯度条的断裂问题，分析了结构的几何参数、材料梯度形式和梯度参数对裂纹尖端应力强度因子的影响。

Structural analysis shows that the coordination geometry of Ni is a distorted octahedron.

结构分析表示， Ni协调几何是一个被变形的八面体。

The chosen FP-LMTO method takes Fourie transforms of the LMTOs in interstitial region, which allow us to avoid the empty sphere in open structures. The supercell geometry is used in our calculation.

本文采用的FP-LMTO方法中对LMTO轨道的尾函数进行傅立叶变换，有利于处理具有开放晶体结构的ZnO及其缺陷，计算中采用超原胞几何构型。

In order todiscuss the structure of operator algebra, in recent years, many scholars have focusedon linear maps and various multiplieative maps on opcrator algebras, and studied thealgebraic and geomrtrial properties and the problem of classification of these mapsMany deep and intercepting results have been achieved, and many new ideals and meanswas introduced.

为了进一步探讨算子代数的结构，近年来国内外许多学者对算子代数上的线性映射和各种可乘映射进行了系统研究，探讨这些映射的代数和几何性质以及刻画分类问题，取得丰富成果并不断提出新的思路和方法。

Numerical examples are given herein, and the second order effects on the statistic values of the structure are discussed under different site conditions and different storeys.

针对常用的高层钢框架-支撑结构，考虑材料非线性和几何非线性，建立了框架部分、支撑部分的二阶动力分析模型。

The AM1 method was used for a quantum chemistry study of the phenol hydroxylation reaction mechanism. The possible reaction path of the phenol and oxyhydrogen free radical was optimized, and the structures of stable intermediates in the reaction mechanism were also obtained.

本文还首次采用AM1方法对苯酚羟基化反应机理进行了量子化学研究，将苯酚与氢氧自由基的反应沿可能的反应路径进行几何优化，得到反应历程上相关驻点稳定构型的三维结构。

Template method was used in IVCD system to quickly and easily build vehicle body concept geometry model and FEM model. This IVCD can integrate body design, analysis and optimization on one CAD platform through parametric variable database and all parametric variables were shared and updated in different phase of IVCD.

IVCD基于车身模板技术，可快速生成车身概念结构几何模型和有限元模型；它还基于参数数据库集成了车身设计、分析和优化，实现了参数共享和更新，并采用知识向导界面，易学易用。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。