反义词：方块

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词语解释

⒈  以矩形的一边所在的直线为旋转轴，其余各边旋转一周而形成的几何体。旋转轴称为圆柱的轴，在轴上这条边的长度称为圆柱的高，垂直于轴的边旋转而成的圆面称为圆柱的底面，平行于轴的边旋转而成的侧面称为圆柱的侧面。无论旋转到什么位置此边都称为圆柱的母线。底面半径为r，高为h的圆柱的侧面积为s=2πrh，体积为v=πr2h。

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1、包装圆柱型和凹型包装，不要求昂贵包装设备或改变盖子。

2、并将功率灵敏度信息用于加肋圆柱壳和潜艇结构的声辐射优化中，实现了声辐射优化的目的。

3、试验平板型和圆柱型等离子体反应器，产生了平板和圆柱辉光等离子体。

4、吸声棒体可设置圆柱形或椭圆柱形或棱柱形。

5、他们花了八个月的时间在这个博物馆内修建了一个传统的摩洛哥院子，里面有喷泉，圆柱，花边的拱廊，以及挂有陶瓷砖的墙。