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衍射对称性 [yǎn shè duì chèn xìng]
[晶体] diffraction symmetry
- 实验表明，反射全息图的衍射光谱呈现出明显的非对称性，并伴随着一系列次峰的出现。
The experiments has shown that the spectrum of reflection hologram presents obvious non-symmetry, and is accompanied with a series of sub-peaks. - 其方法包括物理和化学的识别、结晶对称性和结构的鑑定、光学检验、X射线衍射和同位素分析等。
The methods employed include physical and chemical identification tests, determination of crystal symmetry and structure, optical examination, X-ray diffraction, and isotope analysis. - 对二维晶体的矩阵表示、对称性及其对X射线衍射的系统消光规律进行了研究，得到并证明了二维晶体的矩阵表示的二个定理和二维晶体对X射线衍射的系统消光定理。
The crystallographic problems of two-dimensional crystal, such as the matrix expression, the symmetry and the systematic absence law of the crystal's X-ray diffraction, are studied.
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