立體截面和均勻截面是什麼來的？

In geometry, a cross section is the intersection of a body in 2-dimensional space with a line, or of a body in 3-dimensional space with a plane, etc. More plainly, when cutting an object into slices one gets many parallel cross sections.
With computed axial tomography, computers construct cross sections from x-ray data.
A cross section is a common method of depicting the internal arrangement of a 3-dimensional object in two dimensions. It is often used in technical drawing and is traditionally crosshatched. The style of crosshatching indicates the type of material the section passes through.

閣下所講的均勻截面,應該是uniform cross section
例如cylinder,每一個cross section 也是circle,
此截面便定義為uniform cross section

好答案

「截面」是切開立體時，切口產生的新平面。
例如你切開一個西瓜時，裏面露出的果肉便是截面。

「均勻截面」指在某個方向切開立體時，
無論從哪兒下刀，截面的形狀和大小完全一樣。
柱體就是「均勻截面」的立體。

2007-02-18 14:01:52 補充：
i am 6a mandy wong