查询词典 numerical computation

The traditional virtual boundary integral expression is based on the extension of single layer potential, for the integral formulas related to single layer potential for parabolic problem, the numerical computation of the exponential integral function is unavoidable.

通常的虚边界积分公式是利用单层位势的延拓来建立虚边界元积分方程，但对带时间变量的单层位势，要涉及到指数积分函数的计算。

It is related to the quality of the images, the precision of the feature extractor and the numerical computation.

它与图像的质量、特征提取算子的精度和数值计算的精度等有关。

In order to investigate the effects of glass heated by CO2 laser and the difference between using TEM00 and TEM11 to preheat quartz glass ,the temperature field and thermal stress field of quartz glass were obtained through numerical computation.

为了了解CO2激光对玻璃加热的效果，研究石英玻璃在TEM00和TEM11两种模式激光作用下的差别。

Geodesic curvature of the pitch curve on spherical surface was introduced as a medium,through which the pitch curve on spherical surface can be changed into equivalent planar pitch curve by numerical computation method.

以曲面上曲线的短程曲率为媒介，导出了球面节曲线伸展成平面当量节曲线的算法。

Numerical computation is to simulate on the atmospheric circulation of the Northern Hemisphere with this model under ideal boundary conditions.

从该模型出发可导出地球流体力学方程，用这一模型对理想边界条件下的北半球大气环流进行了数值计算。

The vector surface integral equation can't be applied to numerical computation directly because its integrands possess the high order singularity.

矢量的面积分方程因其被积函数具有高阶奇异性，不能直接应用於数值计算。

The action mechanism of the stun gun is analyzed in detail and the scheme design of the stun gun system is completed. With the SolidWorks software, three-dimensional model of the system has been constructed. The characteristics of the interior ballistics of the proposed scheme of stun gun are analyzed and the corresponding interior ballistics model is proposed. The numerical computation of the interior ballistics is also conducted. According to the functions of the electrical module ,the circuit is designed and the security and reliability of the system is analyzed. At last, the test scheme of the system is proposed and some experiments are carried out which validate the feasibility of the designed system.

论文中分析了电击枪的机理，完成了系统方案的设计；用SolidWorks软件建立了三维实体模型，分析了所提方案电击枪的内弹道的特点，建立相应的数学物理模型，并进行了内弹道分析计算；根据电子模块所要实现的功能设计了硬件电路；对设计的方案进行了安全性和可靠性的分析，最后拟定了试验的方案并进行了试验研究，验证了设计方案的可行性。

The basic principle of modern numerical computation is to preserve the intrinsical character of the original problems.

现代数值计算的基本原则是尽可能保持原问题的本质特征。

It applied Kirchhoff expression to FDTD numerical computation of acoustic scattering problems,and iterated near field on the integral surface to far field that was contributed to,which could b.

针对此问题，提出一种新的外推方法，它将柯西霍夫公式应用于FDTD数值计算中，将积分面上每一步的近场都叠加到它有贡献的远场时刻上去，近远场变换可以与FDTD的场分量迭代同步进行，不需要将外推边界上每一时间步的场值都存储下来，减少了存储空间。

Logarithms were invented to shorten the work of extended numerical computation.

人们发明对数来缩短运算冗长的数值计算工作。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。