attice constants A set of maximally six floating numbers representing the unit cell. As crystal symmetry grows the number of lattice constants needed to describe the metrics of a unit cell reduce. In the cubic system there is only one constant 分 苏五长 有一太苏 玉 长 Lattice constants A set of maximally six floating numbers representing the unit cell. As crystal symmetry grows the number of lattice constants needed to describe the metrics of a unit cell reduce. In the cubic system there is only one constant