由于太阳活动性下降，天文学家们相信在未来的几年内，地球可能将进入新的小冰河时期。
The Earth could enter a new 'Little Ice Age' in the coming years due to low solar activity, astronomers believe.
空间生物学辐射效应是由空间辐射环境引起的，空间辐射环境的变化受太阳活动性影响。
Variation of space environment is driven by solar activity. Space radiation will lead to biological effects of space radiation.
基于电离层总电子含量与太阳活动性之间的线性相关关系，利用在新乡长期测量所得的电离层总电子含量的资料，得出了总电子含量的一种经验模式。
Based on the linear correlation between the ionospheric total electron content (TEC) and solar activity, an empirical model of the TEC is derived using the measured data of the TEC at Xinxiang.
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