- 更多网络例句与材料相关的网络例句 [注：此内容来源于网络，仅供参考]
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A theoretical model is built to investigate the simulation of the infrared characteristic of the metal structure with the PCM false target.Structure parameters of the PCM false target that suit for the simulation are investigated numerically.According to the results,further request on the improvement of the thermal conductivity of PCM is presented.An experimental platform is built and the numerical model is validated experimentally.Three key thermal characteristic components of the false tank(barbette,wheel and front armor plate) are manufactured and tested,and good results are obtained.A method for the thermal conductivity enhancing of PCM by using aluminum fins is studied,the influence of the structure parameters of PCM plates to the simulation effects are investigated numerically,and the reasonable configuration parameters of the PCM plates used to simulate the steel plates of different thickness are obtained.In the study of the application of heat convection method in IR false target,a passive infrared simulation system is designed to simulate the infrared characteristic of metal constructions.The system is made up of pipe-plate,pump,receiver,and working fluid.
在相变材料应用于红外示假的研究中，通过数值模拟，研究确定了适用于制作假目标的相变材料各物性参数的范围，分析了相变材料制作假目标的可行性，并根据所得结果，选取石蜡为研究对象，建立了相变材料模拟金属构件红外特征的理论模型，研究了适用于模拟各金属构件红外特征的相变材料假目标的相关结构参数，得出了相变材料假目标模拟各金属构件红外特征的理论结果，并对相变材料的导热系数这一物性提出了进一步的改进要求；搭建了假目标实验平台，验证了所建理论模型的准确性；以坦克假目标为研究对象，制作了炮塔、负重轮和前上装甲板三个坦克假目标的关键红外热特征部件，并进行了野外实验，取得了较好的结果；以添加铝肋片作为改进相变材料导热能力的手段，理论研究了此类导热增强型相变材料的相关结构参数对模拟效果的影响，得出了模拟不同厚度钢板红外特征的导热增强型相变材料的结构参数及模拟效果。
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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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Major content of this work includes five aspects as follows:(1). Oxygen sensitive materials had been prepared by carrier covalence method, and the preparation mechanism of the materials had been investigated by FI-IR, SEM, and the detection experiment of oxygen. Then through the detection of oxygen, the sensitivity and stability had been estimated, and it was studied that the properties of materials would be affected by the various factors.(2). Oxygen sensitive materials had been prepared by carrier covalence-cross linking method, and the preparation mechanism of the materials had been investigated by FI-IR, SEM, and the detection experiment of oxygen. Then through the detection of oxygen and spectrophotometer, the sensitivity and stability had been estimated, and it was studied that the properties of materials would be affected by the various factors.(3). For the detection of gaseous oxygen, the fiber optical sensor on basis of oxygen sensitive materials had a respond time of 10s, detection limit of 5ppmand detection precision of 0.5%. The sensor had good repeatability and stability, a less delay and at least 1 year life-span.
本论文主要包括以下五个方面的内容：(1)载体共价法制备氧敏感材料：通过红外光谱、扫描电镜图谱和氧测试实验探讨该氧敏感材料的制备机理，通过氧测试实验评价该氧敏感材料的氧敏感性和稳定性，同时研究了各种因素对该氧敏感材料性能的影响(2)载体共价—交联法制备氧敏感材料：通过红外光谱、扫描电镜图谱和氧测试实验探讨该氧敏感材料的制备机理，通过氧测试实验和分光光度计评价该氧敏感材料的氧敏感性和稳定性，同时研究了各种因素对该氧敏感材料性能的影响(3)氧敏感材料在光纤气态氧传感器中的应用：该传感器的响应时间为10s，检测下限为5ppm，检测精度为0.5％，具有较好的重复性和稳定性，迟滞较小，使用寿命至少为1年，适合各种环境下气态氧浓度的检测。
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A mixed method of conjugate gradient method and steepest descent method ;2. The Modified Steepest Descent Method──Best Point in Steepest Descent method;3. This paper presents the mathematical model for the optimization of heterogeneous components, and the method using sensitivity analysis and steepest descent method to optimize material properties, the component is then identified.
阐述了非均质材料零件设计优化的数学模型，并采用灵敏度分析以及最速下降法对其各个材料区域的材料性能进行设计优化，得到最佳材料性能参数后，再从非均质材料数据库中找到相应的工程材料，合成满足设计要求的非均质材料零件该方法为设计者提供了切实可行的非均质材料零件的材料设计方
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The result shows that the requirements and testing methods for flammability of building materials are similar between the United State and Canada, and they mainly are engaged in the test of combustibility and flame spread. In European Union, a new classification system for flammability of building materials was implemented in 2001, which includes two systems; one is for floor coverings and the other for all other building units. In Japan, the interior materials are classified into non-combustible, quasi noncombustible and fire-retardant materials according to Cone Calorimeter method (ISO 5660). China has established a non-combustible test, a three-class classification system for combustible wall and ceiling interior finishing materials and a two-class classification system for combustible floor coverings.
通过研究认为：美国和加拿大对建筑材料燃烧性能的要求和试验方法基本相似，他们主要针对材料的燃烧性、火焰传播进行检测；欧盟于2001年颁布了新的燃烧性分级体系，该分级体系包括专门针对铺地材料部分和针对其他所有建筑构件材料和产品部门；日本采用锥形量热计法(ISO 5660)将内装饰材料分为不燃、准不燃和阻燃材料3个等级；我国对建筑材料的试验方法包括不燃性试验方法、墙和天花板内装饰材料的三级分级体系和铺地材料两级分级体系。
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This paper presents the mathematical model for the optimization of heterogeneous components, and the method using sensitivity analysis and steepest descent method to optimize material properties, the component is then identified.
阐述了非均质材料零件设计优化的数学模型，并采用灵敏度分析以及最速下降法对其各个材料区域的材料性能进行设计优化，得到最佳材料性能参数后，再从非均质材料数据库中找到相应的工程材料，合成满足设计要求的非均质材料零件该方法为设计者提供了切实可行的非均质材料零件的材料设计方
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5 Material type 材料类型 4.5.1 Antistatic Material: the material that used to prevent / inhibit the generation of the Triboelectric Charge; or the material that only generate less than 200V Triboelectric voltage; it has no requirement about surface resistivity and volume resistivity .
抗静电材料–能抑制摩擦生电的材料；摩擦电压在 200V 以下的材料；防静电材料没有表面电阻率或体积电阻率的要求。
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The method is as follows that the two ends of a nanometer are fixed on two pivots and an axial micro-pulling force T is applied on the nanometer; an electrode is arranged on the middle part of the side of the nanometer and an alternate voltage is applied on the electrode to motivate the nanometer to generate resonance, and therefore, the natural frequency f of the nanometer is measured and acquired; according to the material characteristics and the geometry characteristics of the nanometer as well as the boundary condition of the nanometer material, the relation between the natural frequency and the axial pulling force of the nanometer, namely the f-t curves of the nanometer, can be calculated by a vibration equation; according to the measured natural frequency f, the size of the micro-pulling force T can be acquired.
该方法将一根纳米材料的两端固定在两个支点上，给纳米材料施加一个轴向的微小拉力T；在纳米材料的侧面，位于该纳米材料的中部放置一个电极，在电极上施加一个交变的电压激励纳米材料使其发生共振，测得纳米材料的固有频率f；根据纳米材料的材料特性和几何特征以及纳米材料的边界条件，由振动方程计算出该纳米材料的固有频率与所受的轴向拉力的关系，即纳米材料的f-T曲线；根据上述测得的固有频率f，得到微小拉力T的大小。
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And some traditional metal materials, non-metallic materials such as steel, cement, plastics, fibers and rubber has been widely used, and a new type of polymer materials is also a beginner's stage, but the very rapid development with very potential, and its positive features, intelligence, refinement of direction, conductive materials, energy storage materials, smart materials, nano materials, optical materials, biological activity, such as research in the field of materials are becoming increasingly active, the study of Polymer Materials very challenging, but also very innovative test of their own.
并且目前一些传统的金属材料，非金属材料如钢铁、水泥、塑料，纤维，橡胶等已经得到了广泛的应用，而新型的高分子材料还在一个起步的阶段，但是发展的很迅猛，具有很大的潜力，其正向功能化，智能化，精细化方向发展，导电材料，贮能材料，智能材料，纳米材料，光导材料，生物活性材料等领域的研究也日趋活跃，所以研究高分子材料很具有挑战性，同时也很考验自己的创新性。
- 更多网络解释与材料相关的网络解释 [注：此内容来源于网络，仅供参考]
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Electronic Material and Element：电子材料元件
电子材料与元件测试技术 Measuring Technology of Electronic Material and | 电子材料元件 Electronic Material and Element | 电子材料元件测量 Electronic Material and Element Measurement
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bred material：增殖出来的材料,滋生的材料
增殖燃料 bred fuel | 增殖出来的材料,滋生的材料 bred material | 烟道 breech
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building material dealer：建筑材料行
建筑材料检验 building material testing | 建筑材料行 building material dealer | 建筑材料运输列车 construction train
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material class number：材料编码,材料类别号码
material civilization 物质文明 | material class number 材料编码,材料类别号码 | material compatibility 材料可混用性,材料相容性
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Materials cost variance：材料成本差异
企业采用计划成本进行材料日常核算时,月末分摊材料成本差异(Materials cost variance)时,超支差异计入"材料成本差异(Materials cost variance)"科目的借方,节约差异计入"材料成本差异(Materials cost variance)"的贷方.
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heat insulating material：绝热材料,保温材料
保温材料 热绝缘体 heat insulator | 绝热材料 保温材料 heat insulating material | 港内转速 港内船速 harbour speed
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Documents from the Inviter：(邀请人材料-女儿准备的材料)
CHECK LIST (材料清单) | Documents from the Inviter:(邀请人材料-女儿准备的材料) | 1. Invitation letter to the applicant. 邀请人给申请人的邀请信(英文)
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luminescent material：发光材料荧光材料
luminescent material 发光材料 | luminescent material 发光材料荧光材料 | luminescent plastics 发光塑料
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u Tb：定义非线性材料特性表
co: 材料特性值,或材料之特性,温度曲线中的常数项 | u Tb, lab, mat, ntemp,npts,tbopt,eosopt 定义非线性材料特性表 | Lab: 材料特性表之种类
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polymers：高分子材料
临床上使用的生医材料可以分为四大类,分别为:金属与合金材料(metals and alloys)、陶瓷材料(ceramics)、高分子材料(polymers)与生物组织材料(biological materials).