沉降速度

例句：

1. 1. The earth is slowly settling into the ocean.
   地球正在缓慢地沉入海洋。
2. 2. The rate of sedimentation determines the speed at which sediment moves downward.
   沉积速率决定了沉积物向下移动的速度。
3. 3. The scientist used a device to measure the velocity of the falling stone.
   科学家使用了一个装置来测量下落的石头的速度。