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(dòng)情況下變速旋轉梁的彈性振動(dòng)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(chē)直線(xiàn)行駛的時(shí)候，環(huán)形齒輪，差速器齒輪和驅動(dòng)軸便會(huì )無(wú)變速的一起轉動(dòng)。
