“then and only then”的概念、定义、习题解题方法及翻译-数学辞典

单词	then and only then
释义	then and only then 当且仅当
随便看	tertiary radical tertiary representation tertiary right ideal tertium non datur tessellation tessellation automaton tessellation problem tesseract tesseract graph tesseral harmonics tesseral spherical harmonics test testability test against an alternative test by the probability paper test channel test complexity test criterion tested object test element test for additivity test for convergence test for divisibility test for homogeneity test for symmetry

数学辞典收录了72750条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。