free-electron laser

例句：

1. 1. Thefree-electron laser is used tocreate high-energy X-raysfor medical imaging.
   自由电子激光器用于产生高能量X射线进行医学成像。
2. 2. The free-electron laser has been a majorbreakthrough in the field of materials science.
   自由电子激光器在材料科学领域取得了重大突破。
3. 3. The free-electron laser isa powerful tool for studying the behavior ofmatter at very high temperatures.
   自由电子激光器是研究物质在极高温度下行为的强大工具。