酸比重计

例句：

1. 1. The engineer used a density meter to measure the density of water.
   工程师使用密度计测量水的密度。
2. 2. The scientist conducted experiments to determine the specific gravity of different liquids.
   科学家进行了实验，以确定不同液体的特定重力。
3. 3. The doctor ordered a specific gravity meter for testing the patient's blood sugar levels.
   医生为测试病人的血糖水平而订购了一台特定重力计。