X-ray absorption near edge structure

例句：

1. 1.X-ray absorption near edge structure (XANES) is a technique used to determine the chemical composition of materials by analyzing the absorption of X-rays at their edges.
   X射线吸收近边结构是一种技术，通过分析X射线在材料边缘的吸收来确定材料的化学成分。
2. 2. The XANES spectra of different samples were compared to identify any differences in their chemical composition.
   将不同样品的XANES光谱进行了比较，以识别它们化学组成上的差异。
3. 3. XANES has been widely used in the analysis of metal alloys and semiconductors, providing valuable insightsinto the electronic structure of these materials.
   XANES广泛应用于金属合金和半导体的分析中，为这些材料的电子结构提供了宝贵的见解。