Modal function的用法和樣例：
例句
- A scheme is proposed to derive natural frequencies and modal functions of a beam under the given boundary conditions and moving axially at a constant speed.
提出在給定邊界條件下確定一勻速運動梁固有頻率和模態函數的方法。 - We postulated that the state of a quantum-mechanical system is specified by a state function.
我們已假設量子力學體系的態用態函數來描述。
