consititutive equation的用法和樣例：
例句
- Perhaps constitutive equation has to be fortified by experimental evidence.
本構方程或許還得用試驗數據予以驗證。 - A new and uniform method to express the constitutive equation for analyzing non-Newtonian fluid flow was put forward on the analyses of all items in momentum equation.
為了解決此問題，在分析流體運動方程中各項物理意義的基礎上，給出了一種統一的本構方程的書寫形式，用於研究非牛頓流體圓管和環空管流層流流動規律。
