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The result showed a thick and dense distribution of bronchus and bronchiole of asthma group; a sparse distribution in respiratory bronchiole and pulmonary alveoli; some positive fibers extrude the epithelium mucosae into the alveoli.

结果发现哮喘组肺内支气管及细支气管阳性纤维增粗、分布密集度显著增加;在呼吸性细支气管及肺泡亦偶有分布;有部分阳性纤维经粘膜上皮内伸出并暴露于管腔内。

This paper starts with the Naroll-Bertalanffy's hypothesis of the allometric growth of urban-rural population, namely and Sherratt's model about the distribution of urban population density, which are both based on the Christaller-l o ··sch's central place hypothesis and the hypothesis of supposing the regional population movement on the ideal land surface is similar to Brownian movement process.

基于中心地假设,从城市人口分布的Sherratt模型和Naroll Bertalanffy的城乡人口异速生长关系出发导出关于人口分布空间动力学和城市扩展时空过程的数学模型,然后借助Batty等关于城市生长的DLA -DBM模拟结果证明人口的区位选择过程与城市的分形形态存在着内在关系。

Figure 32 shows parallel cooling, in which the cooling medium flows into a manifold channel from whence it is simultaneously distributed to the individual bubbler tubes and exhausted via a common collector channel.

图32 是并联冷却器,如图所示,冷媒从分布器同时分布流入单个的喷水口,回水汇入一个收集通道。

They are not only distributed in the west part of Manjiaer depression and west part of Tabei uplift, but also in Tazhong uplift, Buchu uplift and Taxinan depression, covering an area of 20×104 km^2, and there are also 7 thickness centers for residual distribution.

大火成岩省的岩石单元分布在满加尔坳陷西段和塔北隆起西段,塔中隆起、巴楚隆起以及塔西南坳陷,几乎涵盖半个塔里木盆地,面积约20×10^4平方公里,并有7个残余分布的厚度中心。

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。

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 distribution characteristics of wave force in front of the structure of circular caisson continuous wharf are expounded.

简述圆沉箱连续式码头结构前波浪力的分布特点,根据圆沉箱前波浪力与沉箱后土压力分布沿环向的不均匀性,总结了对圆沉箱顶部局部加强的 4种方法。

The address calculating circuit is very simple and consists of three adders and pq 4:1multiplexers,which calculates pq addresses for the pq memory modules in parallel.

其地址计算电路极其简单,仅含3个加法器和pq个4:1多路器,能够同时为pq个存储模块计算地址;数据分布电路只有一个,用来完成读出和写入时数据在数据寄存器和存储模块之间的分布

Coupled with the three-dimensional transient heat conduction equation, a heat treatment furnace is simulated. The temperature of the gas in the enclosures and the steels vary with the time of calefaction.

将辐射传热模型与三维非稳态导热模型相耦合,对一个热处理炉简化模型内传热问题进行了计算,分析了炉内气体温度分布与钢锭温度随加热时间的变化情况,炉内气体温度和钢锭温度分布合理,计算结果可信。

By using the method of Western blot on fractions of nuclear and cytosol of primary cultured mantle cells and immunogold electron microscopy, we found out the completely different localization of these two proteins: CaM was localized both in cytoplasm and nuclear but CaLP was localized only in the cytoplasm.

通过对体外培养的珍珠贝外套膜上皮细胞核质分离后进行的Western blot分析和免疫电镜研究发现,CaM和CaLP的亚细胞定位是截然不同的:CaM分布于外套膜上皮细胞的细胞核与细胞质中,而CaLP却仅分布于外套膜上皮细胞的细胞质中。

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推荐网络例句

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行,五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益,这将是我们的荣幸。

The report also shows that the proportion of unmarried men and women living together has doubled between 1986 and 2006, with 13 per cent of those aged 16 to 59 now cohabiting.

报告还指出,从1986年至2006年,英国未婚男女同居的比例增长了一倍,在16岁至59岁的人群中,有13%的人同居。