This is known as the sunspot cycle.
这是被称为太阳黑子周期。
A typical sunspot exists for just a few weeks.
一个典型的太阳黑子只存在几个星期。
We use it to fitting 1848-2002 sunspot data. The effect is good.
用它拟合1848- 2002年太阳黑子相对数数据，取得很好的效果。
This time miserable, and I like the white board on a sunspot so obvious.
这下惨了，我就像白棋盘上的一颗黑子这样明显了。
Conclusion: The sunspot has a certain influence upon hepatitis incidence.
结论：太阳黑子对肝炎发生率有一定的影响。
It's quite difficult people to face the sun directly and see sunspot by eyes.
人眼直接正视太阳时，看到太阳黑子概率非常小。
Sunspot activity is correlated with the total amount of energy we receive from the sun.
太阳黑子的活动性与我们从太阳那获得的总能量密切相关。
Sunspot activity is correlated with the total amount of energy we receive from the sun.
太阳黑子的活动性与我们从太阳那获得的总能量密切相关。
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