坐标系的

When a few of local 3D terrain models have been reconstructed respectively,firstly find the common 3D points between every two adjacent local models based on edge detection and image matching,secondly fit the matrix of coordinate transformation employing the technique of separating rotation matrix and translate vector,and lastly register these local 3D models into a single coordinate system.

当恢复出多个局部3D地形模型时，首先基于边缘检测和图像匹配技术提取出相邻局部模型之间的公共数据点，然后采用分离旋转变换和平移矢量的策略拟合出相邻模型之间的坐标转换关系，之后就可以将局部模型统一在同一个坐标系下。

Due to rotation characteristics of spindle and definite parameterized structure of aerostatics lubricated bearing ,mass-spring structural method equivalent to aerostatics bearing system was introduced and system main coordinates and inherent frequency were obtained by establishing dual movement equation.

针对气体静压主轴的运动特性和气体静压润滑轴承的参数结构，提出了采用质量-弹簧结构方法来等效气体静压轴颈轴承系统，并建立了系统二自由度运动方程，最终确定了系统的主坐标系和固有频率。

The analytic expression of the fractional Fourier transform based on cylindrical coordinates was derived.

推导出分数傅里叶变换基于柱坐标系下的解析表达式，应用此解析表达式对空心高斯光束进行分析，得到其分数傅里叶变换的解析表达式。

PML_FDTD in three-dimensional cylindrical coordinates the realization of good reference papers!

详细说明： PML_FDTD在三维柱坐标系下的实现，很好的参考论文！

For other c.s. moving relatively to the ether-sea it should depend on the direction in which we are measuring.

在其他对以太海运动的坐标系中，光速则与我们进行测量的方向有关。

If this is so, then the Galilean relativity principle is not valid and the speed of light cannot be the same in every c.s.

假使是这样，那么伽利略相对性原理便是无效的，而在每一个坐标系中的光速便不会相等。

Therefore, although the source of light is rigidly connected with my G.S., the velocity of light will not be the same in all directions.

因此虽则光源是严密地关联于我的坐标系，但各个方向上的光速却不会一样。

In this paper the shallow water equations in the Lagrangian coordinate s were derived and the numerical solutions were found out for shallow water problem with moving boundary by using a 2 order Godunov scheme.

移动边界问题是水力计算中难点之一，本文用拉格朗日坐标系来描述浅水方程，并用二阶Godunov算法求解有移动边界的浅水问题的数值解。

In this paper the shallow water equations in the Lagrangian coordinates were derived and the numerical solutions were found out for shallow water problem with moving boundary by using a 2 order Godunov scheme.

移动边界问题是水力计算中难点之一，本文用拉格朗日坐标系来描述浅水方程，并用二阶Godunov算法求解有移动边界的浅水问题的数值解。

The Lorentz transformation does not represent the two coordinate system with two reference of both time and space.

提要：洛伦兹变换的两坐标系不能代表两参考物的两个时空。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。