created sense approved 太阳活动/太陽活動 · tàiyánghuódòng · solar activity
太阳活动 / 太陽活動
tàiyánghuódòng
solar activity
fluctuations and phenomena on the Sun's surface and atmosphere, including sunspots, solar flares, and solar variation
太阳活动对地球的无线电通信有显著影响。