Early observations were assumed to be representative, but were based on small samples.
早期的观察结果具有一定的代表性,但样本空间较小。
These early observations have been supplemented with results from chemical fractionation.
这些早期的观察曾为化学馏分的结果所增补。
To learn more about how the sun and other stars work, after early observations using rockets, scientists began studying the sun from Earth orbit.
为了探索太阳和其它恒星的工作原理,在早期观测活动后,科学家使用火箭开始在地球轨道上对太阳进行研究。
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