[font=Times New Roman][/font] [font=Helvetica][size=10.5pt][font=Times New Roman][/font][/size][/font][font=宋体][size=10.5pt]请教，两个圆锥相交截圆，我试着求相交圆尺寸[/size][/font][font=Helvetica][size=10.5pt]337.3[/size][/font][font=宋体][size=10.5pt]结果与实际相差很[img]file:///d:/My%20Documents/My%20Pictures/CON1.bmp[/img]大。请赐教！！！[/size][/font]