recording densitometer

例句：

1. 1. The medical team used a recording densitometer to analyze the patient's blood samples.
   医疗团队使用记录密度计来分析病人的血液样本。
2. 2. The scientist developed a new device that can measure the density of different materials with high accuracy.
   科学家开发了一种新设备，可以高精度测量不同材料的密度。
3. 3. The engineer used the recording densitometer to detect the leak in the pipeline system.
   工程师使用记录密度计检测管道系统中的泄漏。