“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	right heredity right Hermite ring right homotopy inverse right hyperbola right ideal right ideal of an algebra right identity right identity element righting couple righting lever righting reflex right injective dimension right injective resolution right injective ring right in land use right inner product right in rem right integral right invariance right-invariant right-invariant function right invariant Haar measure right-invariant Haar measure right-invariant integral right invariant mean

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。