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圆柱有哪几个部分组成
更新时间: 2020-10-31 00:00:00  

圆柱是由两个大小相等、相互平行的圆形(底面)以及连接两个底面的一个曲面(侧面)组成的。

直圆柱也叫正圆柱、圆柱,就是底面和顶面是同样半径(r)的圆,并且两圆圆心的连线和顶面、底面的互相垂直。圆柱侧面展开图是长方形。

关键词: 圆柱 部分 组成

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