Bessel

名词 bessel:

1. German mathematician and astronomer who made accurate measurements of stellar distances and who predicted the existence on an 8th planet (1784-1846)
   同义词：Friedrich Wilhelm Bessel

Bes.sel

NONE（无词性）
Prussian astronomer who recalculated the orbit of Halley`s comet (804), verified by parallax the distance from the earth to the twin star ' Cygni (838), and developed a class of mathematical functions based on his study of planetary perturbation.
贝塞耳，弗雷德里希·威廉：(784-84') 普鲁士天文学家，重新测量了哈雷彗星轨道（804年），通过视差核实地球到双子星座'──天鹅星座的距离（838年），在其行星摄动研究的基础上发展了一种数学函数