单词	if and only if
释义	if and only if 当且仅当
随便看	interior derivative interior differential expression interior differential operator interior dimensional kernel interior Dirichlet problem interior domain interior edge interior estimate interior feasible solution interior function interior geometry interior inverse problem interior layer interior mapping interior measure interior metric interior multiplication interior Neumann problem interior node interior normal interior of a manifold interior of a set interior operation interior operator interior opposite angles

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。