而昨天我向你们讲过，这种种情况下，如果用笛卡尔坐标系描述是有意义的，等于1,0，和，- 1，时，m, equals, one, zero, and, minus, one，说明这三个原理其实性质是相同的。
And I showed you last day that this is one case where trying to go in a Cartesian space makes sense, m indicates the three principle coordinate directions.
例如，当我们徒步走在空旷的乡村上的时候，我们发现使用地理方位非常有用。但是当我们描述小规模的空间时，我们完全以自己为中心的坐标系进行交流。
We find it useful to use geographic directions when hiking in the open countryside, for example, but the egocentric coordinates completely dominate our speech when we describe small-scale spaces.
下面的图表描述了几种常见的方法在坐标系中的位置。
The following chart illustrates where several popular methods appear along these dimensions.
对于大变形问题，采用了多浮动坐标系的分段描述，有效地降低了离散化误差，提高了模型的精度。
About the large deformation description, a multi floating coordinate system is adopted. It can effectively reduce the error of discretization.
而较好的总结中应列举有亮点的成就，配上几行标签式的描述，也就是人们所知的‘成就坐标系’。
It's better to list a few bullets with pointed achievements and a branded tag line stating, 'known for achieving XYZ.
每一个点产生一个特征向量来描述关于其尺度空间坐标系的局部区域采样。
Each point is used to generate a feature vector that describes the local image region sampled relative to its scale-space coordinate frame.
研究表明，通过借助于矢阵概念，在涉及多个坐标系时，张量的相对导数得到了更加清晰和严格地描述。
It was shown that with the help of vectrix one can treat the relative derivatives of a tensor more clearly and more rigorously when multiple reference frames were concerned.
介绍了地壳垂直运动的均衡理论，基于全球通量均衡基准，建立了任意坐标系下描述地壳垂直运动的动力学模型。
The isostatic theory of crust vertical movement is introduced. On the basis of the flux isostatic datum, a dynamical model, by which the crust vertical movement can be described is established.
其次有关波前面的描述和三维坐标系之间的变换也是个难点。
Moreover, it is difficult to implement a description of the wave front and the transformation of three-dimensional system of coordinates.
提出结构拓朴和几何的一般规律及其抽象的方法，引入整型名义坐标系，并在该坐标系下，利 用指示矩阵对抽象结构进行描述。
In the paper, the authors present the common law of structural topology and geometry and the method of abstract, and give the integer nominal coordinate system.
首先，导出了用极坐标系描述的中厚板自由振动板的微分方程，用分离变量法求得其一般解。
Firstly, the expressions of free vibration of moderately thick plates in polar coordinates are derived and the general solutions are obtained by the means of method of separation of variables.
他要求你描述一个坐标系，这个坐标系的顶点已确定。
It requires you to specify the coordinate system with respect to which the vertex is to be positioned.
在建模过程中采用多参考坐标系法描述搅拌桨和挡板间的相互作用，并考虑通气引起的搅拌罐内液位的上升。
The method of multiple reference frames(MRF) was employed for the computation of three-dimensional turbulent flows in a cylindrical stirred tank.
在建模过程中采用多参考坐标系法描述搅拌桨和挡板间的相互作用，并考虑通气引起的搅拌罐内液位的上升。
The method of multiple reference frames(MRF) was employed for the computation of three-dimensional turbulent flows in a cylindrical stirred tank.
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