pulsed NMR spectrometer

例句：

1. 1. The pulsed NMR spectrometer is used to analyze the chemical structure of molecules.
   脉冲核磁共振光谱仪用于分析分子的化学结构。
2. 2.The NMR spectrometer was used to study the properties of different types of metals.
   核磁共振光谱仪被用来研究不同类型金属的性质。
3. 3. The pulsed NMR spectrometer has become a valuable tool in drug discovery.
   脉冲核磁共振光谱仪已成为药物发现中的一种宝贵工具。