英语人>网络例句>扑 相关的搜索结果
网络例句

与 扑 相关的网络例句 [注:此内容来源于网络,仅供参考]

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。

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。

Cadastre, topological relations, spatio-temporal topological relations, the expression of model, calculation method

地籍,拓关系,时空拓关系,表达模型,计算方法

In this dissertation, we have prepared 15 new MOFs by using different organic carboxylate ligands, and analyzed their topology structures as well as explored their multifunctional properties.

本论文依据晶体工程学原理,从金属有机骨架晶体材料的功能性出发,主要研究这类化合物的合成、拓结构和多功能性质,旨在探索金属有机骨架晶体材料的结构多样性;并在结构研究的基础上,开发新型次级结构单元以及具有新颖拓结构的金属有机骨架晶体材料的设计合成与性质应用。

A few I must have driven to despair Made quick asides, but having done in air A whir among white branches great and small As in some too much carven marble hall Where one false wing beat would have brought down all, Came tamely back in front of me, the Drover, To suffer the same driven nightmare over.

有几只肯定是让我赶傻了呼啦一下闪开,腾空而起,在或粗或细的白树枝间棱树林好比满是雕刻的大理石门厅它们胡乱闪着翅膀又飞到我面前,好像我是赶着牲口的商人结束了驱赶的梦魇。

Then the brutal minions of the law fell upon the hapless Toad; loaded him with chains, and dragged him from the Court House, shrieking, praying, protesting; across the marketplace, where the playful populace, always as severe upon detected crime as they are sympathetic and helpful when one is merely 'wanted,' assailed him with jeers, carrots, and popular catch-words; past hooting school children, their innocent faces lit up with the pleasure they ever derive from the sight of a gentleman in difficulties; across the hollow-sounding drawbridge, below the spiky portcullis, under the frowning archway of the grim old castle, whose ancient towers soared high overhead; past guardrooms full of grinning soldiery off duty, past sentries who coughed in a horrid, sarcastic way, because that is as much as a sentry on his post dare do to show his contempt and abhorrence of crime; up time-worn winding stairs, past men-at-arms in casquet and corselet of steel, darting threatening looks through their vizards; across courtyards, where mastiffs strained at their leash and pawed the air to get at him; past ancient warders, their halberds leant against the wall, dozing over a pasty and a flagon of brown ale; on and on, past the rack-chamber and the thumbscrew-room, past the turning that led to the private scaffold, till they reached the door of the grimmest dungeon that lay in the heart of the innermost keep.

随后,粗暴的狱吏们向倒霉的蟾蜍,给他戴上镣铐,拖出法庭。他一路尖叫,祈求,抗议。他被拖着经过市场。市场上那些游手好闲的公众,对通缉犯向来都表同情和提供援助,而对已确认的罪犯则向来是疾言厉色。他们纷纷向他投来嘲骂,扔胡萝卜,喊口号。他被拖着经过起哄的学童,他们每看到一位绅士陷入困境,天真的小脸上就露出喜滋滋的神色。他被拖着走过轧轧作响的吊桥,穿过布满铁钉的铁闸门,钻过狰狞的古堡里阴森可怖的拱道,古堡上的塔楼高耸入云;穿过挤满了下班士兵的警卫室,他们冲他咧嘴狞笑;经过发出嘲弄的咳嗽的哨兵,因为当班的哨兵只许这样来表示他们对罪犯的轻蔑和嫌恶;走上一段转弯抹角的古老石级,经过身着钢盔铁甲的武士,他们从盔里射出恐吓的目光;穿过院子,院里凶恶的猛犬把皮带绷得紧紧的,爪子向空中乱抓,要向他过来;经过年老的狱卒,他们把兵器斜靠在墙上,对着一个肉馅饼和一罐棕色的麦酒打瞌睡;走呀走呀,走过拉肢拷问室,夹指室,走过通向秘密断头台的拐角,一直走到监狱最深处那间最阴森的地牢门前。

The proof is given that the category of linear fuzzy neighborhood spaces in the sense of Katsaras is isomorphic to that of co-towers of topological vector spaces and the intersection of the category of linear fuzzy neighborhood spaces with the category of type fuzzy topological vector spaces is the extract category of induced fuzzy topological vector spaces.

证明了Katsaras的线性fuzzy邻域空间范畴与分明线性拓空间的余塔空间范畴同构,而Katsaras的线性fuzzy邻域空间范畴与型fuzzy拓线性空间范畴的交集恰为诱导的fuzzy拓线性空间范畴。

The interrelationship between several basic categories in fuzzy topology is made clear in terms of co-tower extension of topological constructs. It is shown that for ever completely distributive lattice L,the the category of L-fuzzifying topological spaces is isomorphic to the cotower extension of the category of topological spaces, and it can be embbedded in the category of L-topological spaces as a simultaneously reflective and coreflective subcategory.

用拓范畴的co-tower扩张的概念厘清了不分明拓中若干基本范畴之间的关系,证明了对任意完全分配格L, L-模糊化拓空间范畴同构于拓空间范畴的co-tower扩张,并且可作为一同时反射余反射子范畴嵌入L-拓空间范畴中。

Chapter one has introduced the background and classification of minimax theorems; Chapter two summarizes several proof method of minimax theorems, which are illustrated with examples; Chapter three has explained the development general situation of minimax theorems for a function and for two functions with chapter four respectively, and according to the classification of the theorem, has illustrated some important conclusionses in quantitative minimax theorems, topological minimax theorems and quantitative-topological minimax theorems separately.

第一章介绍了极大极小定理的背景及其分类;第二章总结了极大极小定理的几种证明方法,并举出例子进行说明;第三章和第四章分别阐述了单函数的极大极小定理和两个函数的极大极小定理的发展概况,在第三章中,按照极大极小定理的分类,分别对数量极大极小定理,拓极大极小定理和数量拓极大极小定理的一些重要结论作了介绍。

Results The detecting rates of the displacement of the mitral coaptation point ,the flail partial mitral leaflets,the coarse and erratic flutter of flail leaflets, the flicking mitral chordae tendineae with coarse and erratic flutter and the vegetation by TEE and TTE with 2-D were 100%and 94.3%, 100%and 65.7%, 85.7%and 54.3%, 77.1%and48.6%, 100%and33.3%, respectively.With color Doppler imaging,eccentric wall jets or eccentric-centric jets were all detected by TEE and TTE, respectively. The regurgitant volume based on PISA method by TEE and TTE was(2025±402)and (607±268)ml/min,respectively.

结果 TEE和TTE对二尖瓣腱索部分断裂的切面超声征象包括收缩期瓣缘对合不良、局部链枷运动、局部粗大动、腱索断端飞鞭运动伴粗大动及赘生物的检出率分别为100%和94.3%、 100%和65.7%、 85.7%和54.3%、 77.1%和48.6%及100%和33.3%; TEE和TTE二尖瓣腱索断裂的彩色多普勒表现为偏心附壁返流束或偏心伴向心返流束,其检出率均为100%;根据PISA法由TEE及TTE估测的返流量分别为(2025±402)及(607±268)ml/min。

第11/100页 首页 < ... 7 8 9 10 11 12 13 14 15 ... > 尾页
推荐网络例句

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。