The cosmic ray flux has some changes due to the solar modulation and other factors, and maybe induce some variability of the Earth's climate.
宇宙线受太阳调制和其它因素影响，流强存在着变化，这种变化可能会引起地球气候的某些变化。
The time variation of the cosmic ray flux is one of crucial problems in the field of cosmic ray physics, solar geophysics and astrophysics, etc.
宇宙线强度随时间的变化，是宇宙线物理、太阳地球物理和天体物理等交叉学科中的重要问题之一。
However, it lacked significance of statistical to study the time variation of the cosmic ray with even high energy before, because the cosmic ray flux with even high energy is very low.
由于甚高能宇宙线的低流强，一直以来甚高能以上能量宇宙线时间变化的研究缺乏统计意义。
However, it lacked significance of statistical to study the time variation of the cosmic ray with even high energy before, because the cosmic ray flux with even high energy is very low.
由于甚高能宇宙线的低流强，一直以来甚高能以上能量宇宙线时间变化的研究缺乏统计意义。
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