sealed radioactive source

例句：

1. 1.The sealed radioactive source is used in the medical industry to detect radiation.
   密封放射性源在医学行业用于检测辐射。
2. 2.The sealed radioactive source has been found in the area where the accident occurred.
   密封放射性源被发现在事故发生地区。
3. 3. The sealed radioactive source is being studied for its potential health risks.
   正在研究密封放射性源的潜在健康风险。