vertical velocity

例句：

1. 1.The elevator's vertical velocity is measured in meters per second.
   电梯的垂直速度以米每秒为单位测量。
2. 2. The wind's vertical velocity can change the direction of the storm.
   风的垂直速度可以改变风暴的方向。
3. 3. The aircraft's vertical velocity must be controlled to avoid collisions.
   飞机的垂直速度必须受到控制，以避免相撞。