diagnostic X-ray unit

例句：

1. 1.The doctor used a diagnostic X-ray unit to examine the patient's chest.
   医生使用诊断X光机检查病人的胸部。
2. 2. The radiologist performed a diagnostic test on the patient.
   放射学家对病人进行了诊断测试。
3. 3. Diagnosis is a process of determining what illness or condition a person has.
   诊断是一个确定一个人患有何种疾病或状况的过程。