sun spot
英
美
- 太阳黑子
详细释义
名词 sunspot:
-
a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field
双语例句
- Galileo was the first person to see mountains on the moon and sunspots on the sun.
伽里略是看到月球上山脉和太阳黑子的第一人。 - Normally the number of sunspots peaks every 11 years, coinciding with the times when the sun's magnetic field is at its strongest.
一般来说，太阳黑子的数量每十一年达到一次顶峰，正巧和太阳磁场最强的周期一致。
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