neutron beam

例句：

1. 1. The physicist used a neutron beam to study the properties of matter.
   物理学家使用中子束来研究物质的性质。
2. 2. The medical team used a neutron beam to treat the patient's cancer.
   医疗团队使用中子束治疗患者的癌症。
3. 3. The neutron beam was used to map out the structure of the new building.
   中子束被用来绘制新建筑的结构图。