velocity changing

• 速度变化

velocity changing的用法和样例：

例句

1. He found the small town changing at an astonishing speed.
   他发现那个小城正以惊人的速度变化着。
2. The application of a pressure difference across an injector does not cause an immediate velocity response of the liquid propellant.
   经过喷注器的压降发生变化时并不马上引起液体推进剂速度变化。