surface approximation的例句大全

Quad tree plane surface approximation method for image coding

图像的四叉树平面编码

A plane surface approximation method for image coding and its quad tree scheme are presented in this paper.

该文提出了一种平面逼近图像编码方法及其四叉树实现方案。

In feature based reverse engineering, surface reconstruction based on sectional curves and surface approximation has been broadly and deeply investigated. A feature based reverse engineering CAD modeling theory has been formed.

在基于特征的反求工程中，基于截面数据的曲面重建技术和基于特征曲面逼近的曲面重建技术已经有相当广泛和深入的研究，形成了比较完整的反求工程CAD建模理论。

Using the three dimentional conformal mapping and a approximation of finite expansion of spherical harmonics, the potential field data in an arbitrary surface are projected to level plane.

本文采用三维保角映射和有限球谐展开方法，将非水平观测面上的位场数据，延拓到同一水平面上。

Based on effective medium approximation and fractal theory for describing nanoparticle clusters, a model for predicting effective thermal conductivity of "nanofluid" is established considering particle size effect and particle surface adsorption.

运用有效介质近似与分形理论描述纳米颗粒团聚体空间分布，同时考虑颗粒尺寸效应及表面吸附作用，建立起纳米颗粒悬浮液有效导热系数预示模型，结果与实测数据相符。

As a primary approximation, the effects of different adsorbed atom masses on surface phonons are discussed by a simple mass defect model.

作为初步近似，用质量亏损模型讨论了不同吸附原子质量对表面声子的影响。

Having been simplified by the linear approximation and the uniform-strati-fied assumption, the amplitude of free propagation ocean internal wave should satisfy hyperbolic partial differential equations and the constraint condition with the sea bottom and sea surface being stream line.

经过线性近似、海水均匀层化假设等一系列简化处理后，自由传播的海洋内波的振幅应满足双曲型偏微分方程和海底海面为流线的约束条件。

By the continuity equation and the momentum equation for an ideal incompressible fluid, this essay derives the fundamental equations of surface water wave and works out an analytical solution under the condition of small-amplitude via the linear approximation theory.

利用理想不可压缩流体的连续性方程和动量方程，推导了表面波基本方程，并应用线性近似理论求出了小振幅波情况下的解析解。

Spurred by the national 863 project product modeling and system design GEMS 5.0 based on wireframe, surfaces modeling, solid modeling, and features this dissertation focuses on solving geometric approximation problems in curve and surface modeling.

本文以国家863项目基于线框、曲面、实体、特征表示的产品造型与设计系统GEMS5.0为背景，研究了曲线曲面造型中的几何逼近问题。

study of eigenstate effect on quantized potential trough surface by means of digital approximation

用数值逼进法研究电场中量子势阱表面本征态效应

the parameters of optical surface of concave-convex infrared lens which can focus laser beams to achieve the output laser beams with lesser output angle and longer focus field. it has been calculated according to paraxial approximation, matrix theory and step by step searching methods.

根据旁轴矩阵、以及分步搜索法寻找到满足输出光束具有较小的出射角、较长焦深的凹凸红外透镜的光学表面参数。

the application of the row pitch approximation formula during the machining of curved surface

曲面加工时行距近似公式的应用

A class of Hermite-Bezier fitting surface with condition of tangent vectors is studied in this paper. The method is based on the Kirov approximation theorem.

本文基于Kirov定理，利用Hermite方法，研究带有附加导数条件的Bezier曲（线）面。

weighted algorithm based on surface normal approximation

基于表面法向差分近似的表面重建新算法

algorithm of sculptured surface fitting based on interpolation and approximation

基于插值与逼近的复杂曲面拟合

This result can be combined with subdivision method to obtain a piecewise interval polynomial approximation for a rational surface.

这一结果可以与细分技术相结合，得到有理曲面的分片区间多项式的逼近。

The internal and surface cracks in rolls were detected with magnet as exciting source. Quantitative detection of cracks was realized by the establishment of mathematical model according to magneton theory and quantitative analysis of crack signals based on the piecewise cyclic approximation of neural network.

以磁为激励源进行轧辊表面及内部裂纹缺陷的检测，基于磁荷理论的裂纹数学模型的建立和神经网络的分段循环逼近的裂纹信号定量分析，实现了裂纹无损定量检测。

A method by integrating partition of threshold switching surfaces with interval computation was proposed to get the conservative approximation of a timer event's irregular switching surface, which can solve the trouble when there exist timers in continuous blocks of hybrid systems and is hard to discrete.

针对混合系统的连续部分存在定时器时难于进行离散模型近似的问题，提出了一种结合阈值切换面划分和变步长区间计算的解决方案。

In this paper, using the PLK method and reductive perturbation method, we obtained the second approximation to cnoidal waves at the free surface and interface for the two-fluid system considered in [ 1].

本文考虑[1]中所建立的模式，采用约化摄动法及PLK方法，求得了自由面及界面上的二阶椭圆余弦波。

In this paper the physical acoustic method ( the Kirchhoff's approximation) is extended to treat the scattering of a nonrigid surface in order to estimate the target strength of tar-gets with absorbing coatings.

本文将物理声学方法（Kirchhoff近似）推广到非硬表面的情况，以解决带有吸声覆盖层的目标的目标强度计算问题。