自形

Random screen ; light scattering ; self\|affine fractal surface

随机散射屏；光散射；自仿射分形表面

When F is an algebraically closed field char F≠2, A is similar over F to an orthogonal matrix if and only if ( 1 ) the invariant factors of A aer self-reciprocal (2) the elementary divi sors of A of the form x...

ii当F为一个代数闭域且char≠2时，F相似于一个正交矩阵的充要条件为(1)A的不变因子是自反的。(2)A的形为(X±1)~(2k)的初等因子出现偶数次。

We recorded 6844 individuals of Arthropoda from Wanwa coastal zone by sweeping net and pitfall trap, and identified as 5 classes, i.e., Arachnida, Diplopoda, Malacostraca, Chilopoda, and Insecta. The most part is Insecta (81.1%), including 15 orders and 77 families .

自2006年12月至2007年5月间，以扫网法与掉落式陷阱杯调查湾瓦之海岸防风林、湿地与草生地，采得节肢动物6844只，经分类鉴定，共有5纲15目77科，其中非昆虫节肢动物占18.9%，以蛛形纲最多；昆虫纲占81.1%，个体数以膜翅目20.8%、弹尾目19.3%、双翅目16.7%与鞘翅目11.3%较多。

The influence of excluded volume on the size of tail-like chain is similar to that on free one, but the mean asphericity parameter of SAW chain is bigger than that of random-walking chain, and the correlation coefficients C〓 and C〓 were larger than those of RW chain.

排斥体积对尾形链尺寸的影响与自由高分子链的排斥体积效应相类似，但是自回避链的平均非球形因子的值大于无规行走链的值，且SAW链的尺寸与形状之间的关联系数的值大于相对应的RW链的值。

The new method has two key steps: one is to get the automorphism group of HEm, and the another one is to introduce the concept of semi-Reinhardt domain and get its complete orthonornal system.

关键之处有两点：一是给出第三类华罗庚域的全纯自同构群，群中每一元素将形为(W，Z0)的内点映为点(W*，0)；二是引进了semi—Reinhardt的概念并求出了其完备标准正交函数系。

Best made in summer and aged six months. Look for a thick, gray rind. Made in Auvergne from 2,000 years. Cantalet is a modern, smaller, barrel-shaped version.

在近于100磅的奶酪轮上有铝印标明生产者；最好的奶酪制作于夏季并贮藏6个月，其外壳厚，呈灰色；此奶酪自 2000年前即产于Auvergne，Cantalet是一款更现代、更小、桶形版本的奶酪。

Whatever you do don't congratulate yourself too much or berate yourself either.

无论你做些什么，别太自得忘形，也别压抑自己。

When Zai Tan gets Xing Qi, pi child overcome make threatening gestures, get meaning be beside oneself.

在谈得兴起时，痞子克张牙舞爪，自得忘形。

PV-BS0807-a PV Junction Box adopts crowned spring and has automatic locking mechanism on plugs to ensure solid connection between contact and connector.

PV-BS0807-a太阳能电池组件连接器，采用内鼓形冠簧接触，公母头插拔带有自锁机构，使电气接触与连接更加牢固。

This paper presents an IFMC CAD model that consits of a geometry model and a material model, in which the geometry space acts as a base space and the material space acts as a bundle space. In this CAD model, the geometry model is based on the non-manifold model. In addition, a half-face data sturucture, which is derived from the half-edge data structure with the non-manifold feature of IFMC taken into account, is adopted to represent the geometry and topology information of the component. For the material model of IFMC, this paper focuses on the FGM component representation firstly and present a simplex-subdivision based CAD data exchange format, in which the material information is represented as a (n-1) simplex and material distributing feature is represented by the interpolation on the simplex-subdivision. Based on those, a part-building orientation optimization algorithm and an adaptive slicing algorithm for FGM component are presented in the paper. For the IFMC material model, the IFMC material information representation is divided into a meso-scale and a macro-scale representation. In the meso-scale, a concept named parameterized periodic functional meso-structure is presented as a unique form to represent the FGM (the homogeneous materials are regarded as a special FGM), the composite and the functional meso-structure material. The model of PMS is a three-tuple that contains the space state informatation, the material parameter and the material meso-scale distribution feature. The macro-scale material information representation is similar to the FGM components by interpolation of the control parameter of the periodical functional meso-structure based on the simplex-subdivision. Through an example of manufacturing-oriented IFMC CAD data processing, it is proved that the IFMC CAD model and the material information representation and process method proposed in this paper can provide a reliable data support for IFMC digital concurrent design and manufacturing.

本文将理想材料零件CAD模型建立在以几何空间为底空间、以材料空间为丛空间的结构上，使用非流形几何模型作为理想材料零件几何拓扑模型的基础，并在半边数据结构基础上，针对理想材料零件的非流形特征局限内部边界上的特点，给出了一个半面数据结构来表述零件的几何拓扑信息；对于理想材料零件的材料模型，本文先从功能梯度材料零件的信息表述与CAD数据交换和处理入手，将材料信息表述为（n-1）维单纯形，然后通过对三维几何区域的单纯剖分，以插值的方式表述零件材料分布特征；在此基础上，根据功能梯度材料零件分层制造中对CAD数据处理的要求，给出了综合考虑零件几何特征与材料特征的生长方向优化算法和自适应切片算法；而对于文中所定义的理想材料零件，本文将其材料信息表述分解到细观和宏观两个尺度进行，首先给出了细观尺度上参数化的周期性功能细结构概念，以此来统一表述功能梯度材料（单质材料作为特殊的功能梯度材料看待）、复合材料和功能细结构材料；把周期性功能细结构模型化为一个包含空间状态信息、材料构成参数和材料细观分布特征参数的三元组，以表达零件的细观材料特征；对于零件宏观的材料变化特征，则同样在几何区域单纯剖分的基础上，通过对细观尺度上周期性功能细结构控制参数的插值来完成；通过理想材料零件CAD数据处理的算例，验证了本文中理想材料零件CAD模型及材料信息表述与处理方法完全可以为理想材料零件的数字化制造提供可靠的数据支持。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。