“principal norm”的概念、定义、翻译、参考文献-科学参考

单词	principal norm
释义	principal norm Mathematics principal norm主范数
随便看	planetary corona planetary cosmogony planetary data system，PDS planetary dynamo planetary embryo planetary ephemeris planetary evolution planetary exploration planetary gear drive planetary geodesy planetary geology planetary interior or planetary internal structure planetary/interplanetary probe planetary ionosphere planetary magnetic field planetary magnetosphere planetary-mass companion planetary-mass object planetary meteorology planetary mill planetary motion planetary nebula planetary nomenclature planetary nutation terms planetary occultation

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。