三维空间

The fundamental formulae of magnetic field were used to deduce the formulae for the three-dimensional magnetic field of tubular magnet.

应用磁体空间磁场规律的基本公式，推导了管柱形永磁体的三维空间磁场规律计算公式。

At the same time,the finite element model of base plate is used in modal analysis and transient dynamic analysis by means of the elasticity finite element method.

为了优化发射器座钣的结构设计，采用有限单元法对某型号发射器座钣三维空间板壳结构进行了整体三维建模，同时运用弹性力学有限元法对座钣建立的有限元模型进行模态分析和瞬态动力学分析。

In order to optimize the structure for the firer base plate by means of FEM,A three- dimensional shell model has been set up for a particular type of firer base plate.

为了优化发射器座钣的结构设计，采用有限单元法对某型号发射器座钣三维空间板壳结构进行了整体三维建模，同时运用弹性力学有限元法对座钣建立的有限元模型进行模态分析和瞬态动力学分析。

Section 1. Of the Nature of FlatlandI call our world Flatland, not because we call it so, but to make its nature clearer to you, my happy readers, who are privileged to live in Space.

我之所以称我们的世界为平面国，不是因为我们就是这么称呼它的，而是为了更清晰地向你们描述它的自然状态，我的朋友们，你们多么幸福，可以生活在三维空间。

I call our world Flatland, not because we call it so, but to make its nature clearer to you, my happy readers, who are privileged to live in Space.

我的朋友们，你们多么幸福，可以生活在三维空间。

We calculate the angles between the P axis and the T axis of two focal mechanism solutions in 3 dimensions, and take the sum of two angles as the distance. By using the system cluster method, the classification of focal mechanism solutions has been carried out.

计算2个震源机制的2个 P 轴在三维空间中的夹角和2个 T 轴之间的夹角，再以2个夹角之和作为距离，采用系统聚类的方法对大量地震震源机制解进行分类。

It is hard to draw in two dimensions a picture of a vector function in three-dimensional space.

在两维图上画三维空间的矢函数图形是件难事。

To improve the accuracy of the coordinates of points,a model is described which consider the equation geometric meaning,making use of mid-point of crossover line to get 3D points coordinate.

三维坐标点计算方面，考虑方程组的几何意义，采用异面直线公垂线中点逼近三维空间点的方法，提高了点坐标的计算精度。

This last property illustrates why, in general, three-dimensional space is required for the geometrid realization rather than two-dimensional space.

这后一性质说明了为什么几何实现一般需要用三维空间而不是二维空间。

The one-tonne satellite carries a highly sensitive gradiometer that will allow scientists to plot tiny variations in the Earth's gravity field in three dimensions.

这颗1吨重的卫星携带了一个高敏感度的梯度仪，它使科学家们得以绘制地球重力场在三维空间的微小变化。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。