“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	Erdos-Ko-Rado theorem Erdélyi Erdélyi function Erdös Erdös Paul Erd⍥s Erd⍥s-Heilbronn problem Erd⍥s-Kac theorem Erd⍥s-Ko-Radó theorem Erd⍥s-Mordell theorem Erd⍥s-Moser equation Erd⍥s number Erd⍥s problem Erd⍥s reciprocal sum constant Erd⍥s squarefree conjecture Erd⍥s-Stone theorem Erd⍥s-Turan conjecture Erd⍥s-Turan discrepancy bound Erd⍥s-Turan theorem ERE eReader industry e-reading room in primary and secondary schools Erebus Mount EREC erect

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