aurora
来自维基词典,自由的词典
来自维基词典,自由的词典
极光 靠近地磁极的高层大气(100公里)中弥慢在夜晚可见的有颜色的光。它是由来自太阳的带电子粒子与太阳中的氧和氮愿子的撞击引起的。极光最常见于极光区,即在离地磁极约22°的范围内。在北极的称为北极光(Aurora Borealis),在南极的称为南极光(Aurora Australis)。-录自无敌电脑词典。
f. 曙光,开始
曙光
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