查询词典 gradient

Its main tasks are to deal with binary images, gray scale processing, and the use of Sobel, Canny, Roberts, Laplacan operator of four digital image edge detection, the results show that: Roberts operator more precise positioning, but more sensitive to noise, Sobel operator son of gray-scale images with low noise gradient has a better detection of the effect of Laplacian can be detected in the vast majority of the edge did not appear at the same time the basic pseudo-edge, the edge can be precisely targeted, Canny operator is the traditional first-order differential operator in one of the best operator to detect the best edge detection, edges clear, make clear at a glance.

主要工作包括图像的二值处理，灰度处理，并运用Sobel、Canny、Roberts、Laplacan四个算子实现数字图像边缘检测，结果表明：Roberts 算子定位比较精确，但对噪声比较敏感，Sobel算子对灰度渐变低噪声的图像有较好的检测效果，拉普拉斯算子可以检测出绝大部分边缘，同时基本没有出现伪边缘，可以精确定位边缘，Canny算子是传统一阶微分算子中最好的算子之一，检测边缘检测的效果最好，边缘轮廓清晰，使人一目了然。问题补充：摘要英文翻译，不要在线翻译的，是在线等！急啊！！！！谢谢！！！！

Its main tasks are to deal with binary images, gray scale processing, and the use of Sobel, Canny, Roberts, Laplacan operator of four digital image edge detection, the results show that: Roberts operator more precise positioning, but more sensitive to noise, Sobel operator Gradient gray son of low-noise images have a better detection of the effect of Laplacian can be detected in the vast majority of the edge did not appear at the same time the basic pseudo-edge, the edge can be precisely targeted, Canny operator is the traditional first-order differential operator in one of the best operator to detect the best edge detection, edges clear, make clear at a glance

主要工作包括图像的二值处理，灰度处理，并运用Sobel、Canny、Roberts、Laplacan四个算子实现数字图像边缘检测，结果表明：Roberts 算子定位比较精确，但对噪声比较敏感，Sobel算子对灰度渐变低噪声的图像有较好的检测效果，拉普拉斯算子可以检测出绝大部分边缘，同时基本没有出现伪边缘，可以精确定位边缘，Canny算子是传统一阶微分算子中最好的算子之一，检测边缘检测的效果最好，边缘轮廓清晰，使人一目了然。不要在线翻译的那种！在线等！！急！！！谢谢！！！

Horizontal gas well model considering well-bore structure parameters, turbulent flow under high-speed non-Darcy flow and start-up pressure gradient was established and solved. Binomial deliverability equation describing horizontal gas well was derived.

建立和求解了包含水平气井井身结构参数、近井区高速非达西渗流条件下气体紊流因素以及启动压力梯度效应的水平气井渗流模型，推导出了描述水平气井产能的二项式产能方程。

Using the formula about the magnetic flux density induced by coil which deduced by Biot-Savart law,this paper deduces the formula about random point's magnetic flux density of hollow column solenoid and deduces the formulas about axial specific magnetic force and radial specific magnetic force by using the field gradient expression of binary function and the expression of specific magnetic force .

利用二元函数的梯度公式及比磁力公式可以得到磁性颗粒在厚壁圆环线圈所产生的磁场任意点的比磁力的轴向分量和径向分量。

Objective To study the method of preparing Vinorelbine Bitartrate in liposomes by pH gradient method.

目的 优选pH梯度法制备重酒石酸长春瑞滨脂质体的制备工艺。

Methods pH gradient method was used to prepare Vinorelbine Bitartrate 1iposomes.The entrapment rate was examined by Sephadex G50 minicolumn centrifugation.

采用pH梯度法制备重酒石酸长春瑞滨脂质体，用Sephadex G50柱层析法测定包封率，考察影响包封率的因素。

Methods The vinorelbine bitartrate liposome was prepared by pH gradient method. Sephadex G-50 and cation exchange resin could entirely separate free vinorelbine bitartrate from liposomes. The concentration of vinorelbine bitartrate was determined by HPLC. The result was analyzed with SPSS.

pH梯度法制备重酒石酸长春瑞滨脂质体，分别以葡聚糖凝胶Sephadex G-50和阳离子交换树脂装柱，离心分离脂质体和游离药物，采用HPLC法测定药物含量，计算包封率，并用SPSS软件进行t检验。

We have calculated the electronic structure of zinc blende structure ZnS under different high pressures by means of plane wave pseudo-potential methodwith generalized gradient approximationin this paper.

引言ZnS是Ⅱ-Ⅵ族半导体材料中一种重要的半导体材料[1—3]，它有闪锌矿和纤锌矿两种不同的结构，有着非常宽的带隙，具有优良的电光特性和广泛的应用前景，已经越来越得到人们的关注。

The band gaps of ternary zinc blende BxIn1-xP and BxGa1-xP alloys are calculated using first principles in the generalized gradient approximation,and their bowing parameters are obtained.

利用第一性原理计算方法，用广义梯度近似处理电子之间的交换关联能，计算了BxIn1-xP，BxGa1-xP的带隙结构。

Prior to Mendel's work, the dominant theory of heredity was one of blending inheritance, which proposes that the traits of the parents blend or mix in a smooth, continuous gradient in the offspring.

之前，孟德尔的工作，占主导地位的理论，遗传是一个混合遗产，其中建议性状父母混合或组合顺利，连续梯度的后代。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。