ring flat-plate的用法和樣例：
例句
- With the stepped-reduction method, the solution of a circular and annular plate with arbitrary axisymmetrical boundary conditions and arbitrary vertical pressure can be obtained.
摘要利用階梯折算法，由傳遞矩陣導出變厚度圓環(huán)板平衡問(wèn)題的初參數解的顯式表達式，將圓環(huán)板的優(yōu)化設計轉化為極小化目標函數的非線(xiàn)性規劃問(wèn)題。
