“open ball”的概念、定义、翻译、参考文献-科学参考

单词	open ball
释义	open ball [`ō·pǝn `bȯl] ^MATHEMATICS In a metric space, an open set about a point x which consists of all points within a fixed distance from x.
随便看	CVC CVD CVn CW C wave CW laser cwm cwt Cyamidae cyanalcohol cyanamide cyanate cyanazine cyanic acid cyanidation cyanide cyanide copper cyanide process cyanide pulp cyanide slime cyaniding cyanine dye cyanite cyano- cyanoacetamide

科学参考收录了103327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。