释义 |
日冕rìmiǎn太阳大气的最外层,亮度约为光球的一百万分之一。日全食时,可以看到黑暗的太阳表面周围有一层淡黄色光芒。{solar corona; corona; faintly yellow ring surrounding the outmost atmospheric layer of the sun with a luminosity one millionth of that of the photosphere, visible in the form of pale yellow light surrounding the dark surface of the sun during a total solar eclipse} |