自形
- 与 自形 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 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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The effective diffusion coefficient of bacteria was obtained.
分形方法是定量描述具有自相似结构的土壤的新方法。
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Our products mainly include: Rivet nuts, Nylon insert lock nuts, Wing Nuts Series, Flange nuts Series, Weld Nuts Series, Locking nuts, Acorn nuts Series, Cone Nuts, Wheel Nuts Series, Hex Fin nuts Series, T-Nuts Series, Bulgy Nuts Series, Reflector Nuts Series , Square Nuts Series, Slotted Nuts Series, Special Nuts Series, Ball Head Of Motor Vehicles Windshield Wipers Series, Special Nuts Series,etc.
主要产品有:铆螺母、尼龙防松螺母、法兰螺母、蝶型螺母、焊接螺母、自锁螺母、盖形螺母、正非标螺母及罗拉、套管、汽车雨刮器球头等系列。
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Comparing to the similar mapping, the conformal mapping has not the linear property.
与自相似映射相比较,自保形映射最大的区别是它不再具有线性性质。
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It modified some terms of the initial formula, which made the snake model not only precisely extract the edge of the protruding object in images but also approach to the concave part of the edge. It introduced exterior sanction energy, which could adaptively change its value to enlarge suction, so that control points could quickly constringe to the real contour without relying on the initial contour. Combined with pattern matching, this new method could increase the precision of transferring the result of edge extraction from one slice to another.
通过调整原始公式的一些参数使得该模型不但能精确地提取图像中的凸形物体的边缘,而且能够接近边缘的凹陷处;引入自适应改变大小的外部约束能量来增大外能的吸引范围,使控制点能够不依赖于初始轮廓而快速地收敛到目标的真实轮廓;结合匹配技术,提高边缘提取结果层间传递的精度。
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Aconnector is an injection molding from the positioning kits and installed in the positioning of the Inner-Block, packaged in the seat of the spring and reed composition, described the position set of cylindrical Chengyuan, the location of the hole sets A circular from the convex to capacity at the first spring home district and the Department of card system for the second district of the blocks in the positioning of the sets of holes in the first referred to the Ministry, since the port inside the shaft Two symmetrical to the hole within the targeted slot, a connector and adapter combination of positioning, positioning slot in the rear, the agreement sets in the central part of setting the level of L-shaped slots, so that the connector and adapter reliable combination of the Practical use of new high-strength engineering materials first injection molding, greatly simplified the process, a connector improve the accuracy of the positioning trough of the utility model to improve, even if the products improve the safety and reliability, and more convenient assembly, product structure is simple And optimize the manufacturing process, reducing costs and improve productivity.
一种连接器是由注塑一次成型的定位套和安装在定位套内的机座、套装在机座上的弹簧和簧片组成,所述的定位套呈圆柱状,该定位套的内孔由一内凸圆隔出容置弹簧的第一区部和卡制机座的第二区部,在定位套的内孔,位于所述的第一区部处,自端口向内,轴向对称设置两条内孔定位槽,起到连接器与适配器结合的定位作用,在该定位槽尾部,约定位套的中部设置L形水平槽孔,使连接器与适配器可靠结合;本实用新型采用高强度工程材料一次注塑成型,大大简化了加工过程,提高了一种连接器的精确度,本实用新型定位槽的改进,即使产品安全可靠性提高,又更方便组装,产品结构简单、制造工艺优化,从而降低了成本,提高了生产率。
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A connector is an injection molding from the positioning kits and installed in the positioning of the Inner-Block, packaged in the seat of the spring and reed composition, described the position set of cylindrical Chengyuan, the location of the hole sets A circular from the convex to capacity at the first spring home district and the Department of card system for the second district of the blocks in the positioning of the sets of holes in the first referred to the Ministry, since the port inside the shaft Two symmetrical to the hole within the targeted slot, a connector and adapter combination of positioning, positioning slot in the rear, the agreement sets in the central part of setting the level of L-shaped slots, so that the connector and adapter reliable combination of the Practical use of new high-strength engineering materials first injection molding, greatly simplified the process, a connector improve the accuracy of the positioning trough of the utility model to improve, even if the products improve the safety and reliability, and more convenient assembly, product structure is simple And optimize the manufacturing process, reducing costs and improve productivity.
一种连接器是由注塑一次成型的定位套和安装在定位套内的机座、套装在机座上的弹簧和簧片组成,所述的定位套呈圆柱状,该定位套的内孔由一内凸圆隔出容置弹簧的第一区部和卡制机座的第二区部,在定位套的内孔,位于所述的第一区部处,自端口向内,轴向对称设置两条内孔定位槽,起到连接器与适配器结合的定位作用,在该定位槽尾部,约定位套的中部设置L形水平槽孔,使连接器与适配器可靠结合;本实用新型采用高强度工程材料一次注塑成型,大大简化了加工过程,提高了一种连接器的精确度,本实用新型定位槽的改进,即使产品安全可靠性提高,又更方便组装,产品结构简单、制造工艺优化,从而降低了成本,提高了生产率。
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BIKE RECORD \ 自行车纪录 Self-appointed "Devil of the Tour de France" Didi Senft rode his "decagon bike" in Storkow, Germany, Tuesday.
自称为"环法自行车赛魔头"的森夫特周二在德国施托尔科骑着他的"十边形自行车"。
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With the electrical connections at the top and bottom side of the wafer-level IC packaging Lead-frame structure and composition of the surface-mount semiconductor package structure Multi-layer printed circuit board Antifuse and its formation method and with the anti-fuse non-volatile memory device unit cell Tandem electric signal processing circuit and electronic device Light-emitting diode packaging structure and encapsulation method Electronic Packaging Structure Flip-chip high-speed optoelectronic components and structure Pairs of piezoelectric friction side by side to promote the three-step device and scanning probe microscope Light-emitting diode and its manufacturing method, the production base of light-emitting diode method Three or four parallel advance of stepping piezoelectric device and scanning probe microscope lens body Silicon substrate and its manufacturing method Semiconductor device and voltage-divider A polysilicon layer and the microcrystalline silicon layer of the double-substrate active layer structure, methods and devices The edge of the thickness of silicon controlled Of a lateral semiconductor devices and high-voltage devices With a vertical-channel transistors semiconductor device Of a memory array and for the manufacture of a memory array method Read-only memory cell array structure Active-matrix substrate and display device High-voltage semiconductor integrated circuit devices, dielectric isolated type semiconductor device Image sensing devices Lens module and its manufacturing methods Solid-state imaging device and camera Injection angle for the trench isolation Organic Light-Emitting Display Device Organic light-emitting display device Bipolar transistor structure of the surface passivation Double-triggered silicon-controlled rectifier HFET Metal-oxide semiconductor transistors Self-aligned trench accumulation mode field effect transistor structure Thin-film transistors and Display Devices TFT Lead Diode Low-frequency, low noise, low-flashing diode Used for thin-film solar cells trap light structure Transparent sun solar cells Quaternary semiconductor heterojunction photovoltaic cells heat Si nano-pillar array heterojunction thin-film solar cells GaN-based micro-composite solar cells isotope Optical sensor Semiconductor by optical components Imaging Detector Transparent conductive oxide coating Silicon-based high-performance dual-junction solar cells Thin-film solar cells Alien LED Devices
非专业,不在行,求高手帮忙。谢谢!具有顶部及底部侧电连接的晶片级集成电路封装导线架结构及其构成的表面黏着型半导体封装结构多层印刷电路板反熔丝及其形成方法和具有该反熔丝的非易失性存储器件的单位单元串联用电式信号处理电路及电子装置发光二极管的封装结构及其封装方法电子封装结构高速光电组件及其芯片倒装结构双压电体并排推动的三摩擦力步进器与扫描探针显微镜发光二极管及其制作方法、发光二极管的底座的制作方法三或四压电体并行推进的步进器及其扫描探针显微镜镜体硅衬底及其制造方法半导体装置与分压电路具多晶硅层及微晶硅层的双底材主动层结构、方法及装置硅晶片的受控边缘厚度一种半导体横向器件和高压器件具有垂直沟道晶体管的半导体器件一种记忆体阵列及其用于制造一记忆体阵列的方法只读内存单元阵列结构有源矩阵基板和显示装置高耐压半导体集成电路装置、电介质分离型半导体装置图像感测装置透镜模块及其制造方法固态成像装置和照相机用于沟道隔离的斜角注入有机电致发光显示装置有机发光显示装置双极晶体管的表面钝化结构双触发型可控硅整流器异质结场效应晶体管金属氧化物半导体晶体管自对准沟槽累加模式场效应晶体管结构薄膜晶体管及显示器件薄膜晶体管无铅二极管低频、低噪音、低闪烁的二极管用于薄膜太阳电池的陷光结构透明遮阳太阳能电池片四元半导体的异质结热光伏电池硅基纳米柱阵列异质结薄膜太阳能电池氮化镓太阳能同位素复合型微电池光学传感器半导体受光元件成像探测器透明导电氧化物涂层硅基高效双结太阳能电池薄膜太阳能电池异形LED器件
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Stems branched from base, glabrous; branches divaricate; leaves lanceolate or oblong, base cuneate or narrowly cuneate.
茎分枝自基部,无毛;分枝极叉开;叶披针形的或长圆形,基部楔形或者狭楔形。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力