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单词 gradient
释义

gradient /'greɪdɪənt//'ɡredɪənt/

英汉-汉英词典
  1. n. 梯度;倾斜度;坡度
  2. adj. 倾斜的;步行的
词组 | 习惯用语
pressure gradient 气压梯度
temperature gradient 温度梯度
gradient method 梯度法
conjugate gradient 共轭梯度
density gradient 密度梯度,密度陡度;密度涨落
gradient descent 梯度下降
gradient elution 梯度洗脱
velocity gradient 速度梯度;速率坡
concentration gradient [化]浓度梯度
thermal gradient [地质]热梯度
gradient centrifugation 梯度离心
density gradient centrifugation 密度梯度离心法;密度梯度离心分离法
gradient vector 梯度向量
strain gradient 应变梯度
geothermal gradient 地温梯度;地热增温率
voltage gradient 电压梯度;电压坡;比电压
potential gradient 电位梯度;势梯度;位能坡度
linear gradient 线性梯度;线性渐变,线性渐变填充
gradient overlay 渐变叠加
vertical gradient 垂直梯度;垂直方向梯度
英语例句库
  1. The car slid down the steep gradient into the river.
    汽车滑下陡峭的斜坡掉入河中。
  2. Preconditioned con- jugate gradient algorithm is a fast and accurate computational algorithm.
    预条件共轭梯度法是一种精确并且收敛迅速的计算方法。
  3. Klinotaxis refers to movement through a gradient while taking successive samples of the environment.
    Klinotaxis是指通过一个梯度转移的同时连续样品环境。
  4. Gravity gradient is the second order derivative of gravitational potential, which can be observed by satellite gradiometer.
    摘要重力梯度为重力位的二阶导数,可以通过星载梯度仪进行观测。
  5. A gradient of 1 in 4 is a rise of fall of one metre for every four metres forward.
    四分之一的坡度是指每前进四米便升高或下降一米。
  6. Submarine temperature, pressure, gas compositions, geothermal gradient and syngenetic water salinity control the depth of hydrate zone basement.Autochthonous bacteriogenic mod...
    海底温度和压力、地热梯度、气体成分、同生水盐度等控制着水合物稳定带基底的深度和厚度。
  7. This study describes the application of the feedback linearization neural networks, known from neural network computing, to the problem of gradient preemphasis.
    本研究应用线性迴归类神经网路于梯度磁场的系统参数调整,这种方法不需要重覆量测与调整,因此所需时间非常短。
  8. We separated the subfractions of LDL by precipitating method and density gradient ultracentrifugation, and identified the subfraction by electronphoresis and electron microscope.
    通过沉淀法分离LDL,然后经过超速离心法分离其亚组分。
  9. The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.
    本文分析了梯度辨识算法跟踪时变系统的缺点,提出了一种新的基于局部多项式逼近的变参数梯度估计算法。
  10. The basic principles of the triboelectricity beneficiation and high gradient magnetic separation technology,as well as its current status of development and usage,were presented.
    实验研究了采用高梯度电磁技术处理热轧废水时,在不同工况下使用的效果、影响因素等。
  11. Peak concentrations and gradients for gentamicin aried considerably between animals, likely resulting from ariations in round window membrane permeability and rates of perilymph flow.
    庆大霉素的峰值浓度和浓度梯度在动物之间的差异相当的大,这可能是由圆窗膜通透性的不同和外淋巴液流动率的不同所导致的。
  12. Image reconstruction is often converted to the nonrestraint extremum of the nonlinear equations.We have deduced a conjugate gradient algorithm from the extremum of norm.
    图像重建常常被转化为解非线性无约束极值问题,通过范数极小化推导出共轭梯度法的一般算法。
  13. Our approach is based on a gradient domain technique that preserves important local perceptual cues while avoiding traditional problems such as aliasing, ghosting and haloing.
    我们的方法是一种基于梯度域方法的技术,保存了重要的局部视觉暗示并避免了传统的混淆现象,如鬼影和光晕的问题。
  14. By using active set strategy, the authors need only to solve a reduced trust region subproblem which is solved inexactly by the truncated conjugate gradient method.
    作者利用有效集策略,在每次迭代中只需求解一个低维的信赖域子问题,该信赖域子问题是通过截断共轭梯度法来近似求解的。
  15. This point out that in order to improve the LMS algorithm performance, the gradient are optimally estimated, or the error signal are nonlinearity processed,these methods are equipollent.
    对最速下降法的梯度优化估值和对误差信号非线性处理,是改善LMS算法性能的等同措施。
  16. While blending factors are gained using the energy function that contains image gradient,which conquers the blur and mackle problems in the overlap area if using the tradition linear weight function.
    最后对于传统图像融合处理中采用线性加权函数通常引起的最终拼合图像重叠区域模糊问题,构造了包含图像梯度的能量函数,用于计算重叠区域的全局最优融合因子。

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原声例句
听力文摘

There is a gradient of children's books.

童书也是有差别的。

双语版 TED-Ed 演讲精选

Energy is particularly concentrated at the steep chemical gradients of hydrothermal vents.

能量特别集中在热液喷口的陡峭化学梯度上。

生物学基础入门

This is called the concentration gradient.

这称为浓度梯度

化妆的力量

And, voila! You have a gradient lip.

好啦!渐变唇色打造完成。

海底两万里(原版)

I stared at the last rays wreathing this peak, while shadows were gradually climbing its gradients.

我注视那照在尖峰顶上的最后阳光和那从尖峰层峦渐次上来的黑影。

潮流科技大事件!

The gradient finish is very unique and looks very, very slick.

渐变效果非常独特,看起来非常非常光滑。

BBC 纪录片《中国老师来了》

The gradient of the code equals delta Y over delta X, right.

斜率等于△y/△x,好了。

Veritasium真理元素

So first, let's deal with wind gradient.

首先,我们来处理风梯度。

Osmosis-消化

Diagnosis is done mainly by hepatic venous pressure gradient measurement.

诊断主要通过测量肝静脉压力梯度来完成。

Veritasium真理元素

Now, due to interactions with the ground, there is a wind gradient.

现在,由于与地面的相互作用,存在风梯度。

中文百科

梯度

上面两个图中,标量场是黑白的,黑色表示大的数值,而其相应的梯度用蓝色箭头表示。

在矢量微积分中,标量场的梯度是一个矢量场。标量场中某一点的梯度指向在这点标量场增长最快的方向(当然要比较的话必须固定方向的长度),梯度的绝对值是长度为1的方向中函数最大的增加率,也就是说 |\nabla f|=\max_{|v|=1} \{\nabla_v f\},其中 \nabla_v 代表方向导数。以另一观点来看,由多变量的泰勒展开式可知,从欧几里得空间RR的函数的梯度是在R某一点最佳的线性近似。在这个意义上,梯度是雅可比矩阵的一个特殊情况。

在单变量的实值函数的情况,梯度只是导数,或者,对于一个线性函数,也就是线的斜率。

梯度一词有时用于斜度,也就是一个曲面沿着给定方向的倾斜程度。可以通过取矢量梯度和所研究的方向的内积来得到斜度。梯度的数值有时也被称为梯度。

英语百科

Gradient 梯度

In the above two images, the values of the function are represented in black and white, black representing higher values, and its corresponding gradient is represented by blue arrows.
Gradient of the 2-d function f(x, y) = xe−(x2 + y2) is plotted as blue arrows over the pseudocolor plot of the function.
The gradient of the function f(x,y) = −(cos2x + cos2y)2 depicted as a projected vector field on the bottom plane.

In mathematics, the gradient is a generalization of the usual concept of derivative of a function in one dimension to a function in several dimensions. If f(x1, ..., xn) is a differentiable, scalar-valued function of standard Cartesian coordinates in Euclidean space, its gradient is the vector whose components are the n partial derivatives of f. It is thus a vector-valued function.

近义、反义、联想词
近义词
n.
change, position, spatial relation

联想词
slope倾斜;opacity不透明;contour轮廓;shading明暗法;curvature弯曲;saturation饱和;curve曲线;curves曲线;density密度;diffusion扩散,传播;steeper浸润器;
英英词典
gradient n.
  1. a graded change in the magnitude of some physical quantity or dimension
  2. the property possessed by a line or surface that departs from the horizontal
    • a five-degree gradient

    synonymous: slope
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更新时间:2025/6/16 21:41:32