提出并应用改进的几何模型法对可见光云图日食阴影做订正处理,并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.
将模糊随机可靠度理论应用于边坡的稳定分析,建立了基于几何法计算广义可靠指标的数学模型。
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.
本文根据计算机对显示器的象素识别功能,提出一种新的区域识别方法——几何模型象素识别法。
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.
根据摆线泵的啮合线方程,建立了用几何法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.
提出误差集聚法,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与物理误差。
A synthesizing method is developed to establish a mathematical model for describing the machining tolerance which synthesizes bo th the geometric and physical tolerance.
通过对历届高考解析几何试题的探讨,尝试从题型特点寻求解答通法,建立一种解题模型,指导解题,以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.
在细微边界元识别和细微特征分解交替进行的过程中,任意用边界表示法表示的几何模型可逐步简化到任意程度。
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.
对包含中等尺寸的成组分布裂隙的岩体,采用岩体几何损伤本构模型,用监测位移反馈分析法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.
通过压汞法毛细管压力曲线和铸体图象分析方法分析孔隙、喉道大小、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.
文中采用数值迭代法和建立等效电流模型,对P_B层结构参数和门极-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.
采用曲面的表面法矢建立了毛坯的几何模型,结合扫描体代数方程,实现了加工仿真和NC代码验证算法。
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.
采用有限元法建立了单热源合成炉和多热源合成炉温度场的有限元几何模型和数值计算模型。
The geometry models and numerical calculation models of temperature field in single-heat and multi-heat sources furnaces are established through finite element method.
根据结构实体几何法(CSG)建模思想,采用层次化、结构化的建模方法,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.
正向运动学模型采用了一种基于空间几何法的快速计算法。
Forward kinematics model is set up based on solid geometry by a rapid calculate method.
通过分析mcnp中子学模型文本描述和构造立体几何表示法的关系,指出从构造立体几何表示法到CAD模型的转换是MCNP中子学模型可视化的关键所在。
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.
介绍了一种利用较少控制点、基于新几何模型的高分辨率遥感影像光束法区域网平差方法。
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.
本文基于刀刃曲线方程,推导了球头等法前角前刀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.
介绍应用几何溶液模型法预测三元系表面张力的新方法。
A new method for predicting the surface tension of ternary from biliary ones by using geometric solution model is given.
文中依据微分几何中的包络原理,从砂轮和刀具之间的运动关系出发,建立新构形法硬质合金插齿刀前刀面的数学模型。
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.
将该解析元与有限元相结合,构成半解析的有限元法,可求解任意几何形状和载荷的基于线性内聚力模型的平面裂纹扩展问题。
The new analytical element can be implemented into FEM program systems to solve crack propagation for plane problems with arbitrary shapes and loads.
为了更好地去除噪声,并保持模型的突出特征,提出了一种鲁棒的点模型多边滤波器降噪算法,该算法充分考虑了模型表面的法向量、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.
实现这一方法的要点有:(1 )建立一个合理的联结翼飞机外形的参数化几何模型;
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;
实现这一方法的要点有:(1 )建立一个合理的联结翼飞机外形的参数化几何模型;
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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