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1. The double-line spectroscopic binary is used to analyze the chemicalcomposition of the sample.
双线光谱仪用于分析样品的化学成分。
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2. The double-line spectroscopicbinary has been proven to behighly accurate in detecting small amountsof impurities.
双线光谱仪二元系统已被证明在检测微小杂质方面高度准确。
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3. In this study, we usedthe double-line spectroscopic binaryto identify the presence of certain elements inthe sample.
在这项研究中，我们使用双线光谱仪二元系统来识别样本中某些元素的出现。