One of the most important was done by the astronomer George Abell.
最重要的调查之一是由天文学家George Abell完成的。
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And this standard cluster radius is known today as "the Abell Radius."
现在标准的星团半径被命名为“Abell半径”。
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But there's another aspect of Abell's work that makes this map so valuable to astronomers.
但是使得Abell完成这个地图的成果对天文学家来说如此宝贵的还有另一个方面。
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