n.
摆白斑;光斑
These faculae frequently are the forerunners of sunspot formation
这些光斑常常是形成太阳黑子的先兆。
-扩展释义
词组
noun
1.A bright region on the surface of the sun, linked to the subsequent appearance of sunspots in the same area.
‘Associated with sunspots are brighter areas called faculae.’
‘Although not easily discerned in telescopic views of the Sun, these features are brilliant enough that the overall effect of the combined spots and faculae is to boost irradiance levels.’
2.A bright spot on the surface of a planet.
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