surface transformation

This paper applied three joint time frequency analysis ( JTFA) methods to a surface discharge signal in oil, i.e., Short time Fourier transformation ( STFT) based spectrogram, Wigner distribution ( DWD) and Gabor spectrogram ( DGS).

将短时傅立叶变换谱、Wigner分布及Gabor谱等3种联合时频分析方法应用于离散时间域，分析并处理了油中沿面放电波形。

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Two surfaces are superposed by finding the rigid body transformation carrying one surface into the other which minimizes the volume between them.

必须寻找一个严格的框架以使两个层面进行重叠的变换过程中能够尽量减少它们之间的空间。

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Study on the Line of Three-dimensional Surface Based on the Affine Transformation

基于仿射变换研究立体表面上的交线问题

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An analysis of the relativistic transformation of an expanding surface is made.

分析了膨胀着的球面的相对论变换.

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The presence of low amount of Yb3+ in TiO2 can inhibit the phase transformation from anatase to rutile, suppress the growth of TiO2 grains, raise the specific surface area, and improve the high temperature stabilization of pores in the composite nano-powders as well.

低量Yb3+掺杂可以抑制TiO2由锐钛矿相向金红石相的转变，阻碍TiO2晶粒的生长，改善粉体的表面织构特性，提高高温组织稳定性。

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In this paper, 3 types of surface modes and 2 types of center modes and their practical applications were proposed and analyzed for the thermal stress analysis during quenching for no phase transformation alloy.

建立并深入分析了3种表层淬火热应力模型和2种内部淬火热应力模型及其实际应用。

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The applications in wireless sensor network using Graph surface embedding For the planar graph formed by wireless sensor network, we assign it a Euclidean metric and embed it in the complex plane, by optimizing a Mobius transformation, we can map the graph onto the sphere.

图的曲面嵌入在无线传感器网络上的应用对于由无线传感器网络所形成的平面图，赋予欧氏度量，在复平面通过优化一个莫比乌斯变换，并将平面图嵌入到上半球面。

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A general expression for the calculation of contact line and surface of action can be easily derived from the geometric model developed from this geometry transformation.

以上述几何变换所提供的几何模型为基础，可以简单地导出一个计算接触线和啮合面的一般公式，这个公式既适用于可展曲面，也适用于（？）可展曲面。

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Taking amount of precipitation as an input and one of water resources as an output, a computing model and mechanism is set up for 3-types water ( precipitation, surface and ground water) transformation each other in Liaoning province.

辽宁省水资源三水转化计算模型，它以降水为输入，以计算水资源量为输出，建立降水、地表水、地下水三水转化的机制及模型结构。

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D Surface Reduction Nem Algorithm Study on topological relations progressive transformation in graphical simplification

三维图形简化新算法在图形简化中面状目标间拓扑关系渐进式转换的研究

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