单词	diameter
释义	Diameter The distance from one point on a circle through the center to another point on the circle. It is also the longest distance across the circle. And it is twice the radius.
随便看	obtuse angle obtuse triangle octagon octahedron octal odd number odds odometer one dimensional opaque open curve open interval open sentence operation operator opportunity cost opposite numbers opposite side or order of magnitude order of operations ordered pair ordering ordinal number ordinary differential equation

数学辞典收录了1200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。