“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	E center ecesis ECG ecgonine echelette grating echelle grating echelon echelon faults echelon grating Echeneidae echidna Echinacea echinate Echinidae Echiniscoidea echinococcosis Echinococcus echinococcus cyst Echinocystitoida Echinodera Echinodermata Echinoida Echinoidea Echinometridae echinomycin

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。