A 2-dimensional space-time line element represented with tortoise coordinate around an event horizon, in every non-static spherically symmetric or plane-symmetric space-time, is explicitly conformal to the 2- dimensional Minkowski line element.是什么意思_A 2-dimensional space-time line element represented with tortoise coordinate around an event horizon, in every non-static spherically symmetric or plane-symmetric space-time, is explicitly conformal to the 2- dimensional Minkowski line element.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句