Comparing with the perturbation results in the generic nonrotating BTZ (NBTZ) black hole background, we found that the massless BTZ hole contains only normal modes in the perturbations.是什么意思_Comparing with the perturbation results in the generic nonrotating BTZ (NBTZ) black hole background, we found that the massless BTZ hole contains only normal modes in the perturbations.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句