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1. This technique is used to analyze the molecular structure of materials.
这种方法用于分析材料的分子结构。
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2. The molecular beam sampling method was developed to study the properties of materials at the atomic level.
分子束采样方法被开发出来,以研究材料在原子层面上的性质。
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3. In this experiment, we used a molecular beam sampling system to detect the presence of certain elements in the sample.
在这个实验中,我们使用了一个分子束采样系统来检测样本中某些元素的出现。