查询词典 operator

Or the the ratio of far field divergence half angles defined by second moment and differential operator.

或以二阶矩和微分算子定义的远场发散角半宽度的比值。

According to the studies for this zero-order differential operator to make an expansion of a function, it can restrain border effect and control Gibbs effect.

并进一步构造了1阶和2阶导算子，对它们的导数矩阵的特性进行了研究，实现了用这样的导算子对微分方程的求解。

The proposed method is sample and does not need to compute both complex partial differential equation and operator equation of Riccati.

该方法计算简单，无须计算复杂的偏微分Riccati方程或算子Riccati方程。

Common image segmentation there are many ways,such as the threshold method,regional growth,differential operator,the border tracking law.

常用的图像分割方法有很多种，如阈值法，区域生长法，微分算子法，边界跟踪法等。

The difference between the differential and the finite-difference operator is however a primitive error source in the numerics.

然而，解析性微分算子和离散性差分算子的差异却是造成数值计算的原始误差源。

The operator differential equations in abstract spaces is animportant branch of modern mathematics.

抽象空间中的算子微分方程是现代数学的一个重要分支，它与数学的许多其它分支有着密切的联系，其理论对工程、力学、数。。。

For the sake of predicting the detection effect of differential operator s,the frequency features of common operators are analyzed from the view point of frequency domain.

为了预测微分算子边缘提取能达到的效果，从频域角度出发，分析了边缘检测中常用微分算子的频谱特性。

Based on the differential operator method of detecting almost all more sensitive to noise and can not guarantee that they will get straight edge, can not be used for target identification and analysis.

基于微分算子检测的方法几乎都对噪声较为敏感且不能保证得到连续的边缘，无法用于辨识和分析目标。

Next, edge detection using differential operator, edge thinning and connecting are introduced. Model and methods of image segmentation are discussed subsequently.

本文针对图像的灰度和边缘等特征，研究了微分算子边缘检测方法以及边缘细化和连接的算法，给出了图像分割的模型和灰度阈值的简单分割及自动分割方法。

The main research aspects are as following. 1. The zero-order differential operator is constructed, based on the inside interpolation collocation method.

一、在内延拓配点的基础之上，构造了0阶导算子去对函数进行相应的级数展开和插值，证明了它对边缘效应和Gibbs现象的抑制作用。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。