查询词典 spherical coordinates

A simple and efficient compact fourth-order Poisson solver in cylindrical and spherical coordinates is presented.

在这篇论文里，将会介绍三维 Poisson 方程在圆柱及球座标下简单且有效率的四阶紧致解法。

The use of spherical coordinates brings new certain difficuhy of numerical simulation, since partial differential equations might possess singularity at the center of ball.

然而，球面坐标的引入也给我们带来了新的困难，特别是偏微分方程在球的中心处会出现形式上的奇异性。

Heat transfer ; hyperthermia ; percutaneous injection therapy ; porous medium ; spherical coordinates.

热传递；热疗；经皮注射疗法；多孔介质；球坐标

By partitioning the protein space in spherical polar coordinates, the space density of the main elements in protein molecules could be obtained easily and quickly.

实验结果表明，该方法可作为各种结构蛋白质相似性比较的辅助手段，不仅能较好地反映蛋白质分子的空间结构特征，而且还有令人满意的时间复杂性，对大分子的相似性比较及进一步分类将有重要意义。

In spherical polar coordinates we get surfaces with the familiar figure eight cross section; again, these are graphs and not orbital shapes.

猛枷撸0得到熟知的8字形截面；再说一遍，这是图线而不是轨道形状。

Finally, based on the geometric model and arithmetic for the coordinates of spherical circular hole series, this paper demonstrates how to convert the planar measuring and calculating results to three-dimensional measuring results, and exhaustive experiment results validate the precision this measurement could achieve.

最后建立了球面孔系坐标的几何模型及算法，实现二维测量到三维测量的转换，并以详尽的实验结果对本测量系统所能达到的精度进行验证。

Through constructing the function between the radius of a sphere and its auxiliary variables, the radius can be obtained if one of the coordinates of each spherical point is measurable and the other two are constant and unknown.

当球面点的坐标分量之一已知，而另外两个分量固定不变但未知时，通过建立球半径与辅助变量之间的关系，可达到测量球半径的目的。

In order to understand the dynamic mechanism of the upwelling phenomenon,we used a three-dimension high resolution turbulent closure circulation model in spherical coordinates based on the modified ECOM_si model to study this upwelling.

为了解该上升流的动力机制，作者利用基于ECOM_si建立的一个水平球面坐标系的高分辨率湍流闭合的三维环流数值模式研究该上升流现象。

Thirdly, we adopt the Jacobi approximation in the radial direction and thus overcome the difficulty of dealing with the singularity of equations at the center of ball. which is caused by the spherical coordinates. Furthermore.

第二，我们在球面上采用球面调和逼近，而在半径方向采用Jacobi逼近，从而既克服了奇异性的困难又将原问题转化为便于并行计算的简单问题。

The scheme can effectively correct the static errors in the magnetic tracking system. The employment of spherical coordinates significantly reduces the calculation complexity in calibration.

此方法能够有效地校正电磁跟踪系统中的静态误差，通过应用球坐标系显著地降低校正计算的复杂程度。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"