• 提出应用改进的几何模型可见光云图日食阴影做订正处理,计算出指定区域处理前、后的灰度共生矩阵

    This paper gives an improved method to eliminating eclipse shadow, and has been evaluated through an actual data experiment with gray level concurrence matrix and image texture feature quantities.

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  • 模糊随机可靠度理论应用于边坡稳定分析建立基于几何计算广义可靠指标数学模型

    A geometry based mathematical model is established for the calculation of reliability index by use of the fuzzy random reliability theory for slope stability analysis.

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  • 本文根据计算机显示器象素识别功能提出一种新的区域识别——几何模型象素识别

    This paper advances a new method of area identification geometric model pixel identifying method according to the pixel distinguishing function of computer upon the monitor.

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  • 根据摆线啮合线方程,建立了用几何求解摆线泵的瞬时流量排量、流量脉动率的数学模型

    Based on the equation of action line for cycloidal pump, a geometrical mathematical model is built to solve instantaneous flow, displacement, average flow and the pulsation of the pump.

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  • 提出误差集聚,可建立多误差因素共同作用下的切削加工数学模型,使之纳入机床加工过程的几何物理误差

    A synthesizing method is developed to establish a mathematical model for describing the machining tolerance which synthesizes bo th the geometric and physical tolerance.

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  • 通过历届高考解析几何试题探讨,尝试题型特点寻求解答建立一种解题模型指导解题,寻求简捷的解题过程。

    A model of working out a solution is established and directive functions are formed, so as to explore a forthright way through the entrance examination problems of analytic geometry and the types.

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  • 细微边界识别细微特征分解交替进行过程中,任意用边界表示表示几何模型逐步简化任意程度

    In the cycle of detailed boundary entities recognition and detail feature decomposition, an arbitrary solid model which is represented as B-Rep model can be simplified to any level.

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  • 包含中等尺寸成组分布裂隙的岩体,采用岩体几何损伤模型监测位移反馈分析同时辨识岩体弹性模量、地应力及损伤参数

    In this paper, for the joint rock mass with medial size and in-group crack, parameter identification of its geometrical damage model is studied by back analysis of in-situ measured displacement.

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  • 通过毛细管压力曲线铸体图象分析分析孔隙道大小、分布及其几何形状建立孔隙结构模型

    With mercury injection capillary curve and thin section, hole porosity and throats with their shapes and distributions are studied and porosity structure model is set up.

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  • 文中采用数值迭代建立等效电流模型,对P_B结构参数和门极-阴极几何图形尺寸进行了合理设计

    Reasonable designs of the structure parameters of PB layer and the gate-cathode geometry are obtained by numerical iteration and an equivalent current model.

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  • 采用曲面的表面建立毛坯几何模型结合扫描体代数方程,实现加工仿真NC代码验证

    Surface normal vector technique is used to setup geometry models for blanks. Combined it with s AE, we implement algorithm for NC machining simulation and Verification.

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  • 采用有限元建立了单热源合成热源合成炉温度有限元几何模型数值计算模型

    The geometry models and numerical calculation models of temperature field in single-heat and multi-heat sources furnaces are established through finite element method.

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  • 根据结构实体几何CSG建模思想采用层次化结构化的建模方构建了机床本体(包括刀具模型

    On the basis of the idea of CSG modeling method, the hierarchical structural modeling method was adopted to construct machine(including tool)model.

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  • 正向运动学模型采用基于空间几何快速计算

    Forward kinematics model is set up based on solid geometry by a rapid calculate method.

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  • 通过分析mcnp子学模型文本描述构造立体几何表示关系,指出构造立体几何表示CAD模型转换MCNP中子学模型可视化关键所在。

    Analysis on the relationship between the text description of MCNP neutronics model and the CSG shows that the conversion from CSG to CAD model is the key issue of the visualization.

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  • 介绍一种利用较少控制点基于几何模型分辨率遥感影像光束区域网差方

    A method of the block adjustment based on a new strict geometric model for remote sensing images with high resolution (RSIHR), using few control points, is presented in this paper.

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  • 本文基于刀刃曲线方程,推导头等面的几何模型及其数控磨削模型

    Based on equation of cutting edges, new geometric model and NC grinding model of rake face of ball end mill with constant normal rake Angle are modeled.

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  • 介绍应用几何溶液模型预测三元系表面张力

    A new method for predicting the surface tension of ternary from biliary ones by using geometric solution model is given.

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  • 文中依据微分几何中的包络原理砂轮刀具之间运动关系出发建立新构硬质合金插齿前刀面的数学模型

    The article rests on enveloping principle of the differential geometry, embarks from the movement relations between grinding wheel and the cutting tool, establishing mathematical model of rake face.

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  • 解析有限元相结合,构成半解析的有限元,可求解任意几何形状载荷的基于线性内聚力模型平面裂纹扩展问题

    The new analytical element can be implemented into FEM program systems to solve crack propagation for plane problems with arbitrary shapes and loads.

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  • 为了更好地去除噪声保持模型突出特征提出一种鲁棒模型多边滤波器降噪,该算充分考虑模型表面的向量、曲率等内蕴几何量和噪声之间的关系。

    In order to remove the noise efficiently and preserve the sharp features of the models, a denoising algorithm of a robust multilateral filter for point-sampled models is presented.

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  • 实现要点:(1 )建立一个合理的联结飞机外形参数几何模型

    Two key issues concerned in this paper are as follows: (1) geometric description of the joined-wing aircraft configurations with a relatively small number of parameters;

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  • 实现要点:(1 )建立一个合理的联结飞机外形参数几何模型

    Two key issues concerned in this paper are as follows: (1) geometric description of the joined-wing aircraft configurations with a relatively small number of parameters;

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