“non negative characteristic form”的概念、定义、翻译、参考文献-科学参考

单词	non negative characteristic form
释义	non negative characteristic form Mathematics ＞偏微分方程＞椭圆型方程＞释义 non-negative characteristic form非负特征形式
随便看	Quaternary glacial geomorphology quaternary glacial period quaternary glaciations quaternary group quaternary human Quaternary mammalian faunas of China quaternary market quaternary notation quaternary number quaternary number system quaternary ocean circulation Quaternary paleoclimate Quaternary paleoecology Quaternary periglacial geomorphology Quaternary Period quaternary quadratic form Quaternary Sciences quaternary semiconductor compound quaternary structure quaternary substitution Quaternary System quaternary system quaternary transgression in China quaternary tree Quaternary volcanism

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。