microtonometer

例句：

1. 1.The microtonometer is used to measure the density of liquids.
   微天平用于测量液体的密度。
2. 2.The microtonometer was used to test the strength of the material.
   微天平被用来测试材料的强度。
3. 3.The microtonometer can detect small changes in weight.
   微天平可以检测到重量的微小变化。