transient problem的用法和样例：
例句
- To solve horizontal thrust at arch feet and rheological change in soft soil is the first problem for arch bridge construction on soft soil ground.
在软土地基上建造拱桥首先要解决拱脚处的水平推力以及软土地基的流变问题。 - The problem that phase change about ice and water was solved in the structured meshes by using FVM, which is representative of many industrial processes.
流体的相变问题的研究在工业及国防工程中具有重要的应用背景。
