cissoidal

例句：

1. 1.The sphere is a perfect example of a cissoidal shape.
   这个球体是完美圆柱形状的一个例子。
2. 2.The cylinder is the basic shape of many machines and tools.
   圆筒是许多机器和工具的基本形状。
3. 3. The cissoidal form of the object is determined by its dimensions.
   物体的圆柱形形式由其尺寸决定。