function of strain造句

By analyzing the echo intensity changes with Acoustoelastography, one can deduce the stiffness gradient, which is the rate of change of normalised stiffness as a function of strain.
However, when the crystal is in contact with a rough surface, stress can easily become a nonlinear function of strain ( and speed ) because the stress is transmitted across a finite number of rather small load-bearing asperities.
It's difficult to find function of strain in a sentence. 用function of strain造句挺难的