air-cored betatron

例句：

1. 1. The air-cored betatron is used for precise beam positioning in particle accelerators.
   空气核心回旋加速器用于粒子加速器中精确的束流定位。
2. 2. The air-cored betatron was the first to achieve such high beam energy.
   空气核心回旋加速器是第一个实现如此高束流能量的设备。
3. 3. The air-cored betatron has revolutionized medical imaging by providing higher resolution images.
   空气核心回旋加速器通过提供更高分辨率的图像，已经彻底改变了医学成像领域。