free surface effect

例句：

1. 1. The researchersfound that the free surface effect could significantly affect the stability of the fluid.
   研究人员发现，自由表面效应可以显著影响流体的稳定性。
2. 2.In the study, the free surface effect was used to explain why the liquid flowed in a particular direction.
   在这项研究中，自由表面效应被用来解释为什么液体以特定的方向流动。
3. 3. The engineers designed a new model to account for the free surface effect during the manufacturing process.
   工程师们设计了一个新的模型，以考虑制造过程中的自由表面效应。