rolling-ball viscometer

例句：

1. 1.The rolling-ball viscometer was used to measure the viscosity of the oil.
   滚动球粘度计被用来测量油的黏度。
2. 2. The rolling-ball viscometer is a useful tool for measuring the viscosity of fluids.
   滚动球粘度计是一种有用的工具，用于测量流体的黏度。
3. 3.The rolling-ball viscometer was used to test the stability of the liquid.
   滚动球粘度计被用来测试液体的稳定性。