| 单词 | Bessel |
| 释义 | Word Frequency Bessel(ˈbɛsəl) noun Friedrich Wilhelm (ˈfriːdrɪç ˈvɪlhɛlm). 1784–1846, German astronomer and mathematician. He made the first authenticated measurement of a star's distance (1841) and systematized a series of mathematical functions used in physics |
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