单词	semicircle
释义	Semicircle Half a circle (made by a diameter and the connecting arc) Its area is half of a circle's area: πr2/2 Its perimeter is half of a circle's perimeter plus the diameter: πr + 2r See: Circle
随便看	gradient gram graph greater than greatest common factor grid gross gross (number) gross income gross pay gross weight half halve handspan harmonic mean hect- hectagon hectare (ha) heft height helix hemisphere hendecagon hepta- heptagon

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。