“ball”概念、定义、翻译-科学时代

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

单词	ball
释义	数学词汇手册 ball 球（体）
随便看	rational behaviour rational-bureaucratic authority rational buying motive rational canonical form rational central simple algebra rational choice rational choice rational choice paradigm rational choice school rational choice theory rational cognition rational-comprehensive decision making rational construction rational continuum mechanics rational decision rational decision rational delay rational development and utilization rational dialectics rational diet rational division algebra rationale rationale rationale rationale