“permanent shadow region”的概念、定义、翻译、参考文献-科学参考

单词	permanent shadow region
释义	permanent shadow region Encyclopedia 理学〔月球构造〕释 permanent shadow region永久阴影区在自转轴与其黄道面交角很小的天体的极区存在的常年未受阳光直射的区域。简称PSR。
随便看	modified frequency modulation, MFM modified function modified gear/profile modified gear modified German mounting modified gradient projection method modified gravitationed theory modified gravity modified horseshoe mounting modified Hubble profile modified isochronal test modified isochrone method modified isothermal sphere modified Julian date modified Korte-weg-de Vries equation modified Lax-Phillips conjecture modified lignin adsorbent modified logarithmic integral modified lottery problem modified Mathieu equation modified Mathieu function modified Mathieu function of the first kind modified Mathieu function of the second kind modified Mathieu function of the third kind modified mean modified method

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