“永久阴影区”的概念、定义、翻译、参考文献-科学参考

单词	永久阴影区
释义	永久阴影区 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	Blackett crater Blackett, Patrick Maynard Stuart black-eyed Susan Black-eye Galaxy black field blackfly Blackfoot Black Forest National Park black freight Black Friday Black Girl black glazed black-glazed ewer with highfired overglaze white-gray splashes（huaci）and two lugs black glazed tea cup with tree leaf pattern black-glazed with silver oil-drop marking Black Glove Event Black God, White Devil black grunt black hat hacker Black Hawk Black Hawk Down blackhead seabream black henbane black hole black hole accretion

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。