| 释义 |
太阳活动tàiyáng huódòng太阳表面黑子、光斑、耀斑、日珥、射电现象等的变化,平均约以11年为周期。活动强烈时,紫外线和粒子辐射增强,使地球上发生极光、磁暴、电离层扰动等现象。{solar activity; changes in the sunspots, faculae, flares, solar prominence, radio, etc., with 11 years as a cycle. In violent solar activity, its ultraviolet and particle radiation increases to induce polar lights, magnetic storms, disturbance of the ionosphere, and other phenomena on the earth.} |