ellipse minor axis

ellipse minor axis major axis,minor axis 分别只得是扇形那个尺寸阿?major axis 是不是扇形定点到弧线的距离?minor axis 是不是弧线的宽度阿? 英语几何题!If the foci of an ellipse are two points of the trisection of the major axis,then the ratio of the distance between the directrix to the distance between the foci is____? minor是什么意思 minor setback AXIS怎么样 axis是什么意思 x-axis sec/axis axis drive axis drive minor in chemistry minor issues是什么意思? 用minor concern造句 minor amendment是什么意思 minor invoice是什么意思 minor groove binderMGB是什么意思 minor breaches 什么意思