【正文】
Shiv K. Gupta Department of Applied Mechanics, IIT Delhi Classification of lattice The Seven Crystal System And The Fourteen Bravais Lattices Shiv K. Gupta Department of Applied Mechanics, IIT Delhi 7 crystal Systems System Unit Cell Shape 1. Cubic a=b=c, ?=?=?=90? Shiv K. Gupta Department of Applied Mechanics, IIT Delhi 7 crystal Systems System Unit Cell Shape 2. Tetragonal a=b?c, ?=?=?=90? Shiv K. Gupta Department of Applied Mechanics, IIT Delhi 7 crystal Systems System Unit Cell Shape 3 Orthorhombic a?b?c, ?=?=?=90? Shiv K. Gupta Department of Applied Mechanics, IIT Delhi 7 crystal Systems System Unit Cell Shape 4. Hexagonal a=b?c, ?=?= 90?, ?=120? 5. Rhombohedral a=b=c, ?=?=??90? 6. Monoclinic a?b?c, ?=?=90??? 7. Triclinic a?b?c, ????? Shiv K. Gupta Department of Applied Mechanics, IIT Delhi 14 Bravais lattices divided into seven crystal systems Crystal system Bravais lattices 1. Cubic P I F Simple cubic Primitive cubic Cubic P Bodycentred cubic Cubic I Facecentred cubic Cubic F Shiv K. Gupta Department of Applied Mechanics, IIT Delhi 14 Bravais lattices divided into seven crystal systems Crystal system Bravais lattices 1. Cubic P