释义 |
crystal system [¦krist·ǝl `sis·tǝm] CRYSTALLOGRAPHY One of seven categories (cubic, hexagonal, tetragonal, trigonal, orthorhombic, monoclinic, and triclinic) into which a crystal may be classified according to the shape of the unit cell of its Bravais lattice, or according to the dominant symmetry elements of its crystal class. |