gradient的例句大全

This paper a Preconditioned Conjugate Gradient ( PCG ) method from a view of probability for concrete image reconstruction.

根据常规图像重建的共轭梯度迭代算法,提出一种预条件共轭梯度法.

In referrence [ 4], the Polak? Ribi é re? Polyak ( PRP) conjugate gradient method for unconstrained optimization is considered and the conclusion is obtained that the PRP method is global convergent for uniformly convex functions under the Wolfe line search.

已有文献对求解无约束优化问题的Polak Ribi啨re Polyak（PRP）共轭梯度法进行了研究并得出结论：采用Wolfe线性搜索确定步长的PRP方法对一致凸函数具有全局收敛性。

This article has introduced an improved algorithm variable difference threshold value which is based on gradient.

文章介绍了一种改进的基于斜率的可变差分阈值算法.

Ceramic micro-and nano-composites are discussed in detail, and functionally gradient materials . ( FGM ) are also briefly described.

重点介绍了微米和 纳米复合材料, 并简单介绍了功能梯度材料 ( FGM ).

The concepts, construction features and preparation methods of gradient materials ( FGM ) were described.

叙述了梯度功能材料 ( FGM ) 的概念, 结构特征以及制备方法.

In the CGT region, the relation between turbulent Reynolds stress and mean velocity gradient is nonlinear.

CGT区域内雷诺应力与平均速度梯度呈非线性关系.

In this paper, the recent developments of gradient cemented carbide and cermet are reviewed, with emphasis on their manufacturing processing, properties, and typical applications.

综述了国内外梯度硬质合金和金属陶瓷材料研究的进展情况，重点介绍了其粉末冶金制造方法、性能特征和典型应用开发。

New Development of Functionally Gradient Cemented Carbide and Cermet

功能梯度硬质合金和金属陶瓷材料研究的新进展

We analyse the design of photoelectric digital level based on PSD, and design the laser gradient direction and measurement device based on PSD.

本文在分析浙江大学设计的基于PSD的光电式数字水准仪的基础上，提出设计基于PSD的激光坡度与指向装置。

Then, mutual recognition about the peaks of BGH between neighboring blocks is implemented so that the edge is not sensitive to the gradient intensity.

然后，通过相邻块内部的梯度峰值的互确认操作，得到对梯度强弱不敏感的边缘，从而能够获得图像中更多的特征信息。

The weights are trained with Gradient Descent Method. The increase algorithm of BVS, and restricted algorithm, was induced.

利用梯度下降法对网络的权值进行训练，并且推导了BVS的增长算法，以及网络训练的限制记忆递推公式。

There is a big stray current under the high voltage wires with a electric potential gradient of 1.3~ 1.5mV/m.

通过现场布点测试发现该区域土壤具有较强的腐蚀性，高压线附近存在强杂散电流，电位梯度为1.30～15.00mV/m；

Hydrocarbon reservoir of Chang 8 presents" near-source and favorable facies", pressure difference gradient of resource-reservoir and pore configuration of reservoir control the distribution of oil saturation-resistivity index.

长8油藏具有近源、优相的成藏特点，源储压差梯度和储层孔隙结构控制含油饱和度&电阻增大率大小分布。

From the distribution of velocity, a great velocity gradient can be seen in the zone with 2 D distance to the wall. The phenomenon was due to the boundary flow and reverse flow near the wall.

冲击射流近壁处存在着回流现象，由于边界层流动和近壁回流引起距离固壁2D内的速度梯度变化较大。

Poly ( A)+ mRNA from Novikoff hepatoma cells were size-fractionated by sucrose gradient centrifugation.

用蔗糖梯度离心法对Novikoff肝癌细胞的多聚（A）~+mRNA进行了链长分部。

The driven force calculated according to pressure gradient is further fitted as Ramp function, by which the analytical expressions of the valves vibration can be easily solved, and the heart sounds are then synthesized.

根据瓣膜两侧血压差计算受迫力，并用Ramp函数拟合。求解瓣膜振动的解析表达式，进而合成心音信号。

The green leaves of vegetables through tissue homogenate, differential centrifugation separation, density gradient centrifugation purify sample of chloroplast.

对蔬菜绿叶通过组织匀浆，差速离心分离，密度梯度离心分离、纯化、提取叶绿体。

MSCs were purified by the method of split red blood cell, combining gradient density centrifugation and adhesion separation.

通过密度梯度离心与红细胞裂解后联合贴壁培养法可获取较为纯化的MSCs。

Methods SEC were isolated by the combination of collagenase perfusion, percoll gradient isopycnic centrifugation and selective adherence;

方法胶原酶灌注结合Percoll密度梯度离心加选择性贴壁的方法分离SEC；

Using sucrose gradient centrifugation to separate the membrane, the cytoplasm and the nuclei of HL-60 cells.

采用蔗糖梯度离心法分离HL-60细胞的胞膜、胞浆和胞核；