glass liquid hydrometer

例句：

1. 1.The glass liquid hydrometer was used to measure the density of the liquid.
   玻璃液体比重计用于测量液体的密度。
2. 2. The doctor used the glass liquid hydrometer to determine the patient's blood pressure.
   医生使用玻璃液体比重计来测定患者的血压。
3. 3.The engineer used the glass liquid hydrometer to check the accuracy of the scales.
   工程师使用玻璃液体比重计来检查秤的准确性。