tetragonal system

The crystals belong to tetragonal system with I4I/ a space group by XRD analysis, which has a structure of scheelite. The cell parameters of crystal were calculated.

通过XRD分析，验证了晶体属于四方晶系、I41/a空间群，并计算了晶胞参数。

The general types of multiple solution in Patterson method for tetragonal system

四方晶系Patterson法多解的一般形式

The phase of SnO__2 on F-doped SnO_2 conducting glass was characterized by X-Ray diffraction technique ( XRD), and the results show that the phases of SnO_2 belong to the tetragonal system and its average diameter is 32.35 nm.

运用XRD分析氟掺杂二氧化锡导电玻璃导电面SnO2的晶型，发现其属于四方晶系，晶粒尺寸为32.35nm。

This paper deals with the autoindexing programming for the electron-diffraction of cubic system, tetragonal system and orthorhombic system.

本程序能对立方晶系、四方晶系、正交晶系晶体的电子衍射进行自动检索。