查询词典 gradient method

Using Chinese squid fishing production data during the main fishing season from 1999 to 2004 in the waters of 150—165°E, the present study combines the sea surface temperature with the horizontal gradient and the percentage of fishing times and daily catch as the suitability index. Using arithmetic mean model and geometric mean model, the integrated habitat suitability index is established based on SST and GSST .

中文摘要：根据 1999—2004 年8—10 月主渔汛期间我国鱿钓船在150—165°E 海域的鱿钓生产数据，结合其表温及表温梯度，分别将作业次数百分比和单位渔船日产量作为适应性指数，利用算术平均法和联乘法分别建立基于表温因子的综合栖息地指数模型。

Approximately 50 ml of bone marrow aspirate were prepared by centrifugation in a ficoll-hypaque gradient.

大约50 ml的骨髓穿刺液经聚蔗糖-影葡胺梯度离心后备用。

Aimed at the dynamic characteristics of disparity gradient neural network, it is concluded that the network is globally asymptotically stable.

着重考察视差梯度神经网络的动态性质，用能量函数的方法分析网络的稳定性，得出网络是渐近稳定的结论，并通过实验得到验证。

Finally, experimental results show that MTVA algorithm has good performance and is better than Phase Gradient Autofocus algorithm.

实验结果表明此算法在处理二次相位误差时优于相位梯度自聚焦算法。

Using axial magnetized permanent rings to build axial gradient magnetic field.

利用轴向磁化的永磁环制造轴向梯度磁场。

Firstly, based on natural gradient and nonlinear principal component analysis, a matrix equation is obtained by block recursive updating,and then the matrix equation is solved using QR factorization and back substitution to obtain the optimal separating matrix.

此外，结合自然梯度和非线性主分量分析提出了一种块递归的盲源分离方法，构造出按块递归更新的矩阵方程，然后用QR分解和回代法求解该矩阵方程得到最优分离矩阵。

Firstly, based on natural gradient and nonlinear principle component analysis, a matrix equation is obtained by block recursive updating, and then the matrix equation is solved by using QR factorization and back substitution to obtain the optimal separating matrix.

首先基于自然梯度和非线性主分量分析，构造出按块递归更新的矩阵方程，然后用QR分解和回代法逐块求解该矩阵方程得到最优分离矩阵。

To follow the force-momentum law, the relation of calculated pressure gradient (i.e., pressure force) balanced with the inertia of fluid is also checked.

依照外力平衡的观点，检验压力梯度与流体惯性力之平衡关系。

Temperature gradient inside or outside the system may be formed from heat absorbance in the process ...

阻抗测量技术可以应用于水合物形成过程中的热过程和热力学研究。

Proteorhodopsin is a simple light-driven proton pump used to establish a proton gradient that is consumed during the generation of ATP. Beja et al.

变形菌视紫质是简单的光驱动质子泵，用以建立产生ATP所需要消耗的质子梯度。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。