“libration”的概念、定义、习题解题方法及翻译-物理辞典

单词	libration
释义	libration The phenomenon that enables 59% of the moon's surface to be observed from earth over a 30-year period, in spite of its synchronous rotation. Physical libration arises from slight variations in the rotation of the moon on its axis, caused by minor distortions in its physical shape. Geometric librations are apparent oscillations arising from the fact that the moon is observed from slightly different directions at different times. The geometric libration in longitude results from the nonuniform orbital motion of the moon. The geometric libration in latitude arises because the moon's axis of rotation is not perpendicular to its orbital plane; it enables more of the lunar polar regions to be observed
随便看	tetrahedron tetrode theodolite theoretical physics theory theory of everything therm thermal capacity thermal conductivity thermal diffusion thermal equilibrium thermal expansion thermal imaging thermal neutrons thermal reactor thermalization thermionic emission thermionic valve thermionics thermistor thermite thermochemistry thermocouple thermodynamic temperature thermodynamics

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。