Changing the structure of the excitation device can change the resonance frequency of the PZT. 通過改變壓電陶瓷的結構可以改變壓電陶瓷的諧振頻率。
"A sweet temper" is a figurative expression, but "sweet coffee" is not. "甜蜜的性情"是個比喻的說法，而"甜咖啡"則不是。
Resonant frequencies are related to the shape and size dimensions of the element. 共振頻率與這種元件的形狀和大小有關。
Based on the equivalent circuit, the resonance frequency equation is derived and the resonance frequency is obtained. 在此基礎上，推出了彈性薄圓盤徑向振動的頻率方程以及振子共振頻率的表達式。
