After that is the transition region a few hundred to a few thousand miles or kilometers thick, which is heated by the corona above it and sheds most of its light as ultraviolet rays.
在这之外是厚度为几百到几千公里的过渡区，它由在其上的日冕加热，并发射大部分光和紫外线。
The brightness of its light ball only parts per million, and only in the total solar eclipse or with a special instrument to see the corona.
它的亮度仅为光球的百万分之一，只有在日全食时或用特制的日冕仪才能看见。
The corona is a brilliant, pearly white, filmy light, about as bright as the full Moon.
光环带是一种灿烂的珠白色朦胧光，几乎像满月一样明亮。
The corona is a brilliant, pearly white, filmy light, about as bright as the full Moon.
光环带是一种灿烂的珠白色朦胧光，几乎像满月一样明亮。
While NGC 6723 appears to be part of the group, it actually lies nearly 30,000 light-years away, far beyond the Corona Australis dust clouds.
而看似与这片星云打成一片的NGC 6723实际上离我们3万光年，远不在南冕座尘埃云的国度。
Corona irradiation or UV light processing technique are adopted for introducing some oxygen-containing groups on molecular chain of polyester fiber.
采用电晕和紫外线辐照，在涤纶织物表面引入含氧极性基团。
Corona irradiation or UV light processing technique are adopted for introducing some oxygen-containing groups on molecular chain of polyester fiber.
采用电晕和紫外线辐照，在涤纶织物表面引入含氧极性基团。
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