bed velocity

例句：

1. 1.The bed's velocity is measured in feet per minute.
   床的速度是以每分钟英尺为单位测量的。
2. 2. The bed velocity has been reduced to make the room more comfortable.
   为了使房间更舒适，床的移动速度已经降低。
3. 3. The bed velocity is a crucial factor in determining the comfort level of the sleeper.
   床的移动速度是决定睡眠者舒适度的关键因素。