radial velocity spectrometer

例句：

1. 1.The radial velocity spectrometer was used to analyze the chemical composition of the sample.
   径向速度光谱仪被用来分析样本的化学成分。
2. 2. The radial velocity spectrometer helped us to identify the origin of the unknown substance.
   径向速度光谱仪帮助我们识别了未知物质的来源。
3. 3.The radial velocity spectrometer was used to study the movement of molecules in the atmosphere.
   径向速度光谱仪被用来研究大气中分子的运动。