梯度法

Riemannian Space. The parameter space in blind source separation is Riemannian Space. Natural gradient has many better characters compared with normal gradient.

自适应盲分离算法中的系数空间是黎曼空间，本文将自然梯度下降法应用于Infomax算法可以改进算法的性能，有利于算法的数值稳定性和提高算法的收敛速度。

With the increase of gas rate of tray holes the velocity of liquid phase on plate only increases a little between caps.The clear liquid height was measured by communicating pipe. The results indicate that the distribution of liquid height is different from traditional trays. The clear liquid height increases with the liquid flow and the height of weir, and decreases with the increase of the gas rate and then return. The gradient of liquid level of CTST is less than that of sieve plate.

应用连通法对立体传质塔板的板上清液层高度进行了系统的测量，结果表明：立体传质塔板的板上清液层高度的分布和传统塔板的分布不同；其板上液层高度随溢流强度和堰高的增大而增大，随板孔气速的增加先降低后又有所回升；与筛板相比较，CTST的板上液面梯度是较小的。

The spermatogonium puirity (including the PGP9.5 cells and the c-kit cells) to achieved above 82% by percoll density of 27-35% and panning method and PGP9.5 cells were (63.6±3.2)% and (71.9±4.1)% respectively.

通过收集27~35%Percoll梯度间的细胞或盘化法纯化后，回收精原细胞纯度(包括PGP9.5 和c-kit 细胞)均达到82%以上，其中PGP9.5 细胞分别占(63.6±3.2)%和(71.9±4.1)%，而c-kit 分别占(21.2±1.8)%和(11.5±0.8)%。

The mixed method raise the convergent rate of the conjugate gradient method, and solve the problem which the steepest descent method can not solve in the condition with badly characteristics for the objective function.

混合算法既提高了共轭梯度算法的收敛速度，又解决了目标函数"性态不优"时，最速下降法难以求解的问题。

In nowadays literature, schedule recovery problems are mainly modeled by time-space network, solved using Lagrangian relaxation heuristic algorithm, subgradient optimization and commercial optimization software ILOG.

目前国外主要采用时空网技术建模和拉格朗日启发式算法、次梯度优化法求解。

On the basis of analysis of developing background and theory of thermoelectric graded materials, p-type (Bi1-0.85Sb0.85)Te3 and PbTe two segments thermoelectrical graded materials with different barriers were fabricated by conventional hot-pressing process.

在分析了热电材料的发展背景和研究理论的基础上，采用热压法制备出单体和双层具有不同扩散势垒的1-0.850.8与PbTe体系二元梯度热电材料。

After immuning rabbits with immunogen which was mixed 13-aa peptide with typhoid bacillus, we tested polyclonal antibody with ELISA.

运用蔗糖梯度超速离心法分离大鼠骨骼肌细胞内外膜，并以Western印迹法测定细胞内外膜GLUT4蛋白的含量。

In this paper,the kinematic equations of flow of Newtonian fluid of helical flow in eccentric annulus were transformed by the method of undetermined coefficient,the calculation formula of pressure gradient of flow of Newtonian fluid of helical flow in eccentric annulus was obtained.

本研究利用待定系数法对 Newton 流体偏心环空螺旋流动的运动方程进行了变换，得到了给定流量情况下 Newton 流体偏心环空螺旋流动的压力梯度的计算公式。

The kinematic equations of the flow of Newtonian fluid in annulus with the inner cylinder executing a planetary motion were transformed using undetermined coefficient method, and the calculation formula of pressure gradient of the flow was obtained with the given flow rate.

利用待定系数法对牛顿流体在内管做行星运动的环空中流动的运动方程进行了变换，得到了给定流量条件下牛顿流体在内管做行星运动的环空中流动的压力梯度计算公式。

Newtonian fluid; helical flow; eccentric annulus; pressure gradient; undetermined coefficient method

Newton 流体；螺旋流动；偏心环空；压力梯度；待定系数法

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。