| 单词 | Friedrich Wilhelm Bessel |
| 释义 | Friedrich Wilhelm Bessel (once / 2954828 pages) n WORD FAMILY Friedrich Wilhelm Bessel n German mathematician and astronomer who made accurate measurements of stellar distances and who predicted the existence on an 8th planet (1784-1846) Syn|Exp Bessel astronomer, stargazer, uranologist a physicist who studies astronomy mathematiciana person skilled in mathematics |
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