基变换 [数] change of base
- 本着对数据采样率、压缩率要求较高的原则,提出了将最优小波包基变换应用到故障行波数据的压缩上。
To access to high sampling speed and compression ratio, the wavelet packet transform theory is applied to data compression of traveling wave. - 提出了欧拉向量、欧拉方向余弦矩阵、欧拉基变换方向余弦矩阵等概念,并给出相应的公式。
Some conceptions and the corresponding equation is put forward, such as Euler vector, Euler orientation cosine matrix and Euler switch orientation cosine matrix. - 利用复数坐标系z上的儒可夫斯基变换,计算带电旋转椭球形电容器的静电能,并对结果进行了讨论。
By using the Zhukovsky conversion in the complex coordinate system, the electrostatic energy of a charged revolving ellipsoidal capacitor is calculated and discussed.
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