Lattice.

the structural particles (molecules, atoms, ions) that make up the crystal are arranged in three-dimensional space in a orderly way at points that periodically form an infinite grid with a certain geometric shape, called lattices. According to the modern dot matrix theory of crystals, the atoms, molecules or ions that make up the crystal structure can be abstracted into geometric points. These no-size, no-mass, indistinguishable points are formed in spatially scheduled shapes called dot arrays, which represent the pattern of structural particles in a crystal. The points that make up a dot matrix are called d'dots, and the chemical content represented by the dots is called structural elements. Therefore, the lattic can also be seen as a collection of points made up of points on a dot matrix. For a defined spatial dot matrix, it can be divided into many parallel het faces according to the selected vector, each parallel heteum is called a unit, and the units with high symmetry, small size, and fewer dots are its proper grid. The lattice is formed by these lattices periodically and infinitely. Space just grid only
7 shapes (corresponding to 7 crystal systems), 14 types. They are simple cube, body heart cube, face heart cube; simple three-way; simple six-way; simple four-way, body-heart quartet; simple orthogonal, bottom-heart orthogonal, ortho-orthotho-body, face-heart orthogonal; simple single oblique, bottom-heart single-slope; simple three-slope grid, etc. The strength of a lattic is measured by lattic energy, or dot matrix energy.