立方体是一种立体图形。
球体是三维体。
It can plot diversified Isoline figure and 3-d solid figure.
可以绘制各种等值线图和三维立体图。
Archimedes showed that the sphere is the most efficient solid figure.
阿基米德指出，球体是最有效的固体形状。
A solid figure whose bases or ends have the same size and shape and are parallel to one another and each of whose sides is a parallelogram.
棱柱（体），角柱（体）多面固体，上下两底面大小、形状相同，且彼此平行，其余诸面则为平行四边形。
A solid figure whose bases or ends have the same size and shape and are parallel to one another and each of whose sides is a parallelogram.
棱柱（体），角柱（体）多面固体，上下两底面大小、形状相同，且彼此平行，其余诸面则为平行四边形。
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