velocity variation的用法和樣例：
例句
- The rotating beam with a varying angular velocity undergoes a vertical base excitation and a horizontal base excitation.
利用哈密頓原理建立了支承運動情況下變速旋轉梁的彈性振動方程及邊界條件。 - As long as the truck is moving in a straight line, the ring gear, differential gears, and drive axles turn together without variation of speed.
當卡車直線行駛的時候，環形齒輪，差速器齒輪和驅動軸便會無變速的一起轉動。
