parentheses Brackets, usually (), which can be used in algebraic expressions to make explicit the order in which arithmetic operations are to be carried out or to associate an argument with a function such as in f(x).
parentheses
数学辞典收录了4151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。