gradient 六级GREGMAT

The car slid down the steep gradient into the river.

汽车滑下陡峭的斜坡掉入河中。

the path becomes very rough as the gradient increases.

小路越来越陡，也变得不平坦起来。

density gradine centrifugation ;

英文: density gradient centrifugation ;

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了辨识算法跟踪时变系统的，出了一种新的基于局部多项式逼近的变参数估计算法。

Preconditioned con- jugate gradient algorithm is a fast and accurate computational algorithm.

预条件共轭法是一种精确并且收敛迅速的计算方法。

a large paved double courtyard which was level, despite the steep gradient of the hill.

一个铺了石头的平整的双层大场院，尽管小山坡很徒。

Gravity gradient is the second order derivative of gravitational potential, which can be observed by satellite gradiometer.

摘要重力为重力位的二阶导数，可以通过星载仪进行观测。

Klinotaxis refers to movement through a gradient while taking successive samples of the environment.

Klinotaxis是指通过一个转移的同时连续样品环境。

Conclusion ADC and signal intensity in lentiform nucleus were not affected by diffusion gradient directions.

结论 豆状核信号强及其ADC值不受弥散方向影响;

A gradient of 1 in 4 is a rise of fall of one metre for every four metres forward.

四分之一的坡是指每前进四米便升高或下降一米。

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.

文中指出：对最速下降法的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。

The influence of different diffuse gradient direction in different lesions of human brain on diffusion-weighted image has become one of the focus researches of neuroradiology.

不同弥散方向在磁共振弥散加权成像对人脑不同部位的表观弥散系数的影响成为研究的重之一。

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法的一般算法。

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。

Methods:We separated the subfractions of LDL by precipitating method and density gradient ultracentrifugation, and identified the subfraction by electronphoresis and electron microscope.

方法:通过沉淀法分LDL,然后经过超速心法分其亚组分。

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。

Submarine temperature, pressure, gas compositions, geothermal gradient and syngenetic water salinity control the depth of hydrate zone basement.Autochthonous bacteriogenic mod...

海底温和压力、地热、气体成分、同生水盐等控制着水合物稳定带基底的深和厚。

By measuring apatite fission tracks, the paleogeotemperature gradients in the Mesozoic and Tertiary in the Jiyuan Depression, North China Basin were estimated.

济源凹陷是勘探的前沿地区,许多油气基础地质问题(如古地温)需要解决。

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。

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法来近似求解的。