- 更多网络例句与理想边界相关的网络例句 [注:此内容来源于网络,仅供参考]
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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。
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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。
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In this paper the conformal transformation method is used to get the inferential reasoning formulas: seepage pressure formula, seepage discharge formula and seepage gradient formula.
本文采用保角变换的方法,通过建立数学模型推导出在均质且理想边界条件下,土石坝基垂直防渗的渗透压力、渗流量和出逸坡降计算公式。
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This space is a very importantsubject in physics, it is also one of the vacuum solutions of the Einstein equation in thetheory of relativity.
在物理学中有一个猜想:AdS-空间上的经典重力理论与这个空间理想边界上的共形场理论是等价的。E。
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Numerical computation is to simulate on the atmospheric circulation of the Northern Hemisphere with this model under ideal boundary conditions.
从该模型出发可导出地球流体力学方程,用这一模型对理想边界条件下的北半球大气环流进行了数值计算。
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On ideal boundary condition, a necessary and sufficient condition for conformal equivalence of an open Riemman surface and its smooth covering surface are given in this paper.
给出了理想边界条件下开Riemman曲面与其光滑覆盖曲面为共形同胚映照的充要条件,并将其推广应用
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An ideal boundary, which stands for the limit condition of real feature under meeting design demands, can be formed by suitable dimensional and geometrical tolerance s.
理想边界是由尺寸公差和形位公差综合形成的,它代表实际要素在满足设计要求条件下的极限状态。
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There is a conjecture in physics that the classical gravitation theoryon AdS-space is equivalent to the conformal field theory on the ideal boundary ofAdS-space.
在物理学中有一个猜想:AdS-空间上的经典重力理论与这个空间理想边界上的共形场理论是等价的。E。
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The proposed approach is verified by two cantilever beam experiments under ideal boundary conditions and uncertain end conditions, and the approach presented here is suitable for crack identification in engineering even if small frequency measuring errors exist.
对于理想边界条件下的裂纹参数识别,在测量频率存在小误差情况下,该方法仍能给出比较满意的结果,对于非完全固支边界条件下的裂纹参数识别,利用本文方法能得到比Narkis的方法更精确的裂纹位置识别结果。
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In mathematics this conjecture is that the extrinsic geometric properties onsubmanifolds in AdS-space have corresponding Gauge theoretic geometric propertiesin its ideal boundary.
如果用数学的语言来解释AdS/CFT对应则为:AdS-空间中子流形的微分几何性质与AdS-空间中理想边界上的规范场论的几何性质是相对应的。
- 更多网络解释与理想边界相关的网络解释 [注:此内容来源于网络,仅供参考]
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ABR:区域边界路由器
2) 区域边界路由器(ABR)将非主干区域连接到区域0,建议每台ABR连接的区域数最多不超过3个,最理想的设计是每台ABR只连接两个区域:主干区域和一个非主干区域;6) 7类:为次末节区域(NSSA)定义的
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across:跨越
他一方面强调"跨越"(across)边界不是"超越" (beyond)边界,另一方面又强调"跨国民主"不是把"跨国"(不管是世界主义的世界政府还是"跨国民主"的公民社会或全球公共领域)单纯地理解为民主的工具或手段,而是对于民主理想本身具有构成性的.
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Beyond:超越
他一方面强调"跨越"(across)边界不是"超越" (beyond)边界,另一方面又强调"跨国民主"不是把"跨国"(不管是世界主义的世界政府还是"跨国民主"的公民社会或全球公共领域)单纯地理解为民主的工具或手段,而是对于民主理想本身具有构成性的.
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Coarse:粗糙
划分网格(mesh):非结构化网格可以分为粗糙(coarse)、中等(medium)和细密(fine)在边界层(Boundary Condition)的输入中,我们需要给出:流体在无穷远处的静压力(最在材料(Materials)的输入中,我们把空气视为理想气体,
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dematerialize:非物质化
现代者们对玻璃和纤细钢材感兴趣,是因为它们是能使构造"非物质化"(dematerialize)的理想材料. 构成主义者甚至象雕塑家们那样进行建造,分解和释放空间. 在立体主义,至上主义者,莫利-纳吉(Moholy-Nagy)和其他人之前,空间总是被理解为约束性的边界.
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ideal boundary:理想边界
ideal black body | 理想黑体 | ideal boundary | 理想边界 | ideal burning | 理想燃烧
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ideal class group:理想类群
ideal boundary 理想边界 | ideal class group 理想类群 | ideal group 理想群
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nonideal flow:非理想怜
nonhomogeneous boundary 非齐次边界 | nonideal flow 非理想怜 | noninertia 无惯性
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Made of sturdy stainless steel and ideal for borders, patios, driveways, pools, paths, etc:取得了坚固的不锈钢和理想的边界, patios ,车道,水池,路径等
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