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(1877–1957), American astronomer. He worked mainly in astrophysics and spectroscopy, and is best known for his independent discovery of the relationship between stellar magnitude and spectral type, which he represented diagrammatically.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。