“Nearctic region”的概念、定义、翻译、参考文献-科学参考

单词	Nearctic region
释义	Nearctic region Biology See faunal region.
随便看	sigma algebra sigma bond sigma electron sigma factor sigma function sigma language Sigma Octantis sigma particle sigma-t density sigma tree sigmatropic reaction sigma word sigmoid growth curve sign signal signal conditioning signal flowgraph signal generator signal hypothesis signal level signalling signal operation signal processing signal processing centre signal strength

科学参考收录了60776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。