at a radius R 和 on a radius R 有什么区别?
two disks(one radius is R,the other radius is 2R) and a flat
Volume:The radius r of a sphere is increasing at a rate of 2
A uniform solid sphere of mass M and radius R is placed on a
英语翻译The electron at the radius r experienced a repulsion fro
The radius of a circular water wave increases at the rate R(
英语翻译a sphere of radius r inside a cube touches each one of t
一道关于角动量的题A uniform,spherical planet of mass M and radius R m
two disks(one radius is R,the other radius is 2R)
两道AP微积分题..1 the volume of a cone of radius r and height h is
请问semidiameter和radius这两个词用法有什么区别,都可以表示半径,还是有不同?
radius 什么意思?
Given an arc of length 144mm on a circle of radius 120mm. Fi