经过两条母线的截面是圆柱、圆锥、圆台中的一类重要截面 ,其面积的最值问题是这类截面的一个研究重点 .从目前的一些资料和刊物发表的文章来看 ,仅有圆柱、圆锥方面的结论 (见下文中的结论 1、结论 2 ) ,而缺少最重要的圆台方面的结论 .作为补充和完善 ,本文将给出圆台中过两 The cross-section through two busbars is an important cross section in cylinders, cones, and cones. The problem of the area’s maximum value is a research focus of this type of cross-section. From the current data and published articles, only cylindrical , Cone conclusions (see conclusions 1, conclusions 2 below), and the lack of the most important roundtable conclusions. As a supplement and perfection, this article will give two