neutron spectrum

例句：

1. 1. The neutron spectrum of thesun is used to study its magnetic field.
   太阳的中子谱线被用来研究其磁场。
2. 2. The neutron spectrumof the Earth's crust is crucialfor understanding its geological history.
   地球地壳的中子谱线对于理解其地质历史至关重要。
3. 3. The neutronspectrum from the reactor was analyzed todetermine the efficiency of the cooling system.
   反应堆产生的中子谱线被分析，以确定冷却系统的效率。