查询词典 represent

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 stateinformatation, 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 discussion of the degradation mechanism: Chitosan is not hydrolyze in neutral soak in vitro. The mechanism of degradation of the PDLLA membrane in vivo and in vitro is similar, both represent the simple hydrolyze. The degradation of he composite membrane mainly represent the PDLLA hydrolyze of, chitosan can hydrolyze when there are acid product which is PDLLA's catabolite in vitro.

降解机理探讨：壳聚糖膜体外中性条件下不水解；聚乳酸膜体内外降解机理相似，都表现为简单水解机理；复合膜体外降解主要表现为聚乳酸的水解，壳聚糖在聚乳酸降解后产生酸性产物的条件下存在酸水解机理。

A composite is a group of objects in which some objects may contain others; thus, one object may represent groups, and another may represent an individual item, or leaf.

一个组合是一组对象，其中的一些对象可以包含其余的对象。

The basic theory of the algorithm for test pattern generation using satisfiability is explored, including represent method of SAT-ATPG, search algorithm and analyses of achievement techniques. We describe how to represent circuits and fault detection problem as Conjunctive Normal Form . We improve an effient search algorithm suited to ATPG based on basic satisfiability algorithm.

本文研究了组合逻辑电路测试向量自动生成的可满足性方法，主要进行了可满足性的测试生成原理、实现算法、性能提高和测试向量的最大压缩等方面的研究，改进了一种有效的测试生成搜索算法SAT-ATPG，提出了隐含多路敏化的故障效应单路定向传播方法SOPCA、控制输入跟踪算法CIT和测试衍生算法TD，取得了较显著的效果。

Based on the dual relation between flow graph and potential graph,flow graph represent the trusses and potential graph represent the mechanisms,obtained the duality relation between trusses and mechanisms.

基于流图和势图的对偶关系以及基尔霍夫定律，用流图表示桁架，势图表示机构，建立了桁架和机构的对偶关系。

Who do members of Parliament represent They represent everyone that is in their electoral district.

国会议员是代表那些人的代表在他们选区中的每一个人。

L* and M represent the skin pigmentation, while a* and E represent erythema of skin.

其中L*和M反映皮肤黑素的变化，而a*和E则反映皮肤红斑的变化。

This paper disserts the represent form of space data model, and discusses three dimensional space data model based on the grid, and points out the integrated necessariness and integrated represent method about the grid-vector spatial data model, and provids a Euclidean distance converting model and algorithm with regard to change from vector data to grid data, as well as establishes the foundation for spatial data handing and spatial data mining.

文章论述了空间数据模型的表示形式，重点讨论了基于栅格的三维空间数据模型，指出了栅格矢量空间数据模型集成化的必要性以及集成化表示方法，给出了将矢量数据转换为栅格数据的欧氏距离变换与算法，为基于栅格空间数据的空间数据处理和空间数据挖掘奠定了基础。

Ivory is a part of elephant but it doesn't represent elephant; hand is an important organ of man but it is not man; I am a graduate from OC but I can not represent OC.

象牙是象的一部分，但是绝对不能代表象；手是人的一个重要器官，可是它也不是人；我是OC的毕业生，可是我不能代表OC。

1A with δ18O =-4‰,δ13C =-3‰ does not represent the value of the initially precipitated marine sediment but does represent the initial, 'unaltered' value of the limestone or dolostone that formed during lithification.

这一数据并不能代表海洋原始的沉积，但是可以代表最初的没有经历交代的灰岩或者白云岩在成岩过程的情况。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。