晶面间距计算公式正交晶系1/d2=h2/a2+k2/b2+l2/c2单斜晶系1/d2=h2/a2+k2sin2/b 2+l2/c22hlcos/(ac)/ sin 2立方晶系d=a/(h2+k2+l2)六角晶系四角晶系单斜晶系三斜晶系If is the angle between plane (h1 k1 l1) and (h2 k2 l2), then forOrthorhombic 2/122/121 )()()(cos clbkahclbkahTetragonal 2/12/121212)(cos clakhclakhCubic 2/122121coslkhlkHexagonal 2/1221121 212 4343cos lcakhlcakhlKVOLUME:Orthorhombic: =abcTetragonal: = 2Cubic: = 3Hexagonal: = ca2hcp transition between (UVW) and (uvtw) U=u-t, V=v-t, W=wu=1/3(2U-V), v=1/3(2V-U), t= - (u+v), w=W.
