在学习单晶衍射，尤其是单晶解析过程中的精修时，会涉及到由晶体结构模拟衍射强度的问题，本程序即是实现了这一计算。-When learning diffraction, especially crystal parsing process refinement, will involve the issue of the crystal structure of the diffraction intensity simulation, the program that is to achieve this process.