At the centre of a Kerr black hole, there is no point singularity, but rather a ring singularity-a spinning one-dimensional ring held open by its own momentum.
科尔黑洞中心是不是奇点而是奇环-由自身动量维持的一维环形。它有两个视界(外部视界和内部视界)以及一个椭圆形的能层(ergosphere)。
Wavelet is the best base of functions, with point singularity, and it has wide application in image processing because of its time-frequency localization and multiscale features.
小波是表示具有点奇异性函数的最优基，它由于具有时-频局部化特点和多尺度特性，在图像处理领域得到了广泛应用。
Conclusion Shenque point moxibustion could increase. blood flow of gastric mucosa, and had certain point singularity.
结论艾灸神阙穴可使大鼠胃粘膜血流量增加，并有一定的穴位特异性。
Conclusion Shenque point moxibustion could increase. blood flow of gastric mucosa, and had certain point singularity.
结论艾灸神阙穴可使大鼠胃粘膜血流量增加，并有一定的穴位特异性。
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