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.
块石形状应接近直棱柱体，或有规则的四边形或多边形。
The shape of block stones shall be close to straight prism or regular quad or polygons.
块石形状应接近直棱柱体，或有规则的四边形或多边形。
The shape of block stones shall be close to straight prism or regular quad or polygons.
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