一、晶体结构的特性晶体是由微粒在三维空间中按照一定的规律和周期重复排列形成的固体物质。晶胞是晶体的基本单位。晶体内部的微粒(包括原子、分子、离子)按照一定的规律排列,这样规律排列出的一个基本单位叫做晶胞,晶胞重复出现形成晶体,因此晶体才具有外形规则的特性。晶体结构的特点有两点:一是晶体内部的晶格点排列规律,形成晶胞。二是晶胞重复出现,形成晶体,因此晶体具有周期性。因此,利用数学模 First, the characteristics of the crystal structure Crystal is a particle in the three-dimensional space in accordance with certain rules and periodic arrangement of the formation of solid material. Cell is the basic unit of crystal. Crystal particles (including atoms, molecules, ions) arranged in accordance with a certain law, so the regular arrangement of a basic unit called the unit cell, cell repeat the formation of crystals, so the crystal has the appearance of regular features. The crystal structure of the characteristics of two points: First, the lattice lattice arrangement within the law, the formation of unit cells. Second, the unit cell occurs repeatedly, the formation of crystals, so the crystal has a periodicity. Therefore, the use of mathematical models