名词
中文翻译:相对太阳黑子数
同义词:
['relative solar spot number', 'relative sunspot index']
例句:
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1. The relativesunspot number is a measure of the sun's activity.
相对太阳黑子数是衡量太阳活动的一个指标。
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2.The relative sunspot number has been increasing recently.
相对太阳黑子数最近一直在增加。
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3.This study found that the relative sunspot number was related to climate change.
研究发现,相对太阳黑子数与气候变化有关。