roentgen cinematography

例句：

1. 1.The radium crystals were used to create the famous photographs.
   放射性晶体用于制作著名的照片。
2. 2.X-rays are used to detect and diagnose medical conditions.
   X光被用来检测和诊断医疗状况。
3. 3. The radium was discovered by a German scientist in the early 1900s.
   德国科学家在20世纪初发现了镭。