free boundary problem的用法和樣例：
例句
- The intent of this study is to discuss the critical property of a free boundary problem of a parabolic integro-differential equation.
摘要討論一類拋物積微分方程自由邊界問題解的漸近性。 - According to the changement of the rubbery region, the diffusion of solvents in the rubbery region will be a free-boundary problem.
由於膠狀區域的變化，在膠狀區域的溶液擴散將是一個自由邊界問題。
