太阳黑子数 meaning in English
sunspot number
Examples
- When the sun is at its most active , which is when it is spotty , the solar wind is stronger and fewer cosmic rays penetrate
当太阳活动进入最活跃的时期，太阳黑子数最多，太阳风也更强，从而穿透大气层闯入地球的宇宙射线也越少；反之，太阳活动的强度较低，更多的宇宙射线可以穿透大气层。