“努比亚人”的概念、定义、翻译、参考文献-科学参考

单词	努比亚人
释义	努比亚人 Encyclopedia 法学〔北非各民族〕释 Nubians努比亚人尼罗河中游的民族之一。
随便看	principal net of a mapping principal net of the flow principal neutral point principal nilpotent orbit principal norm principal normal principal normal complex principal normal form principal normal line principal normal plane principal normal section principal normal surface principal normal vector principal number principal nutation principal object principal offender principal of land laws principal of least dissipation of energy principal open set principal optical axis principal orbit principal orbit type principal order principal order module

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。