回旋加速器

例句：

1. 1. The cyclotron is used to accelerate protons in nuclear physics experiments.
   回旋加速器用于核物理实验中加速质子。
2. 2. In the early days of space exploration, rockets were the primary means of propulsion for spacecraft.
   在太空探索的早期，火箭是航天器的主要推进方式。
3. 3. The accelerator was designed to study the behavior of subatomic particles.
   加速器被设计用来研究亚原子粒子的行为。