液体比重计

例句：

1. 1. The liquid density meter was used to measure the density of water in the tank.
   液体密度计被用来测量水箱中水的密度。
2. 2. The engineer used the liquid density meter to determine the composition of the oil.
   工程师使用液体密度计来确定油的组成。
3. 3. The liquid density meter was used to check the accuracy of the measurement.
   液体密度计被用来检查测量的准确性。