radium capsule

例句：

1. 1. The radium capsule was used to treat cancer patients.
   放射源胶囊用于治疗癌症患者。
2. 2.The radium capsule was a revolutionary medical device.
   放射源胶囊是一种革命性的医疗设备。
3. 3.The radium capsule was a valuable tool for medical research.
   放射源胶囊是医学研究的一种宝贵工具。