velocity
单词辨析：
普通用词，指交通工具等运动的速率或事情发生的速度。
The train went by at high speed.
火车疾驶而过。
This new plane can reach a speed of 900 kilometres an hour.
这架新飞机的时速可以达到900公里。
We had to increase the speed of delivery.
我们必须加快送货速度。
指人步行的速度，常引申为生活、变化等的速度。
He quickened his pace.
他加快了步伐。
The pace of change has accelerated.
变革的步伐在加速。
In the world today, mankind is progressing at a tremendous pace.
在当今世界，人类进步一日千里。
常指某事在一段时间内发生的速度，可与 speed 换用。
His money was running out at an alarming rate/speed.
他的钱用得很快，速度惊人。
The rate/speed of economic growth has slowed down.
经济增长速度放缓了。
物理学术语，指物体沿着一定方向运动时的速度；作普通意义上的速度解时，则指高速。
The jet plane is flying at the velocity of sound.
喷气机正在以音速飞行。
The students were asked to calculate the velocity of light.
要求学生计算出光的速度。
Leopards can move with an astonishing velocity.
豹子跑起来速度惊人。
相关例句：
Seismic wave anomaly and analysis of velocity profile can improve reliability of petroleum exploration.
显示震波异常与速度剖面分析，的确可以提高石油探勘的信赖度。
A bullet goes from this gun with a velocity of3000 feet per second.
此枪发出的子弹，其速度为每秒3000英尺。
For a vibrating plate, the vibrating velocity is reconstructed by iterative regularization method.
以振动平板为例，分别对简单振速分布和复杂振速分布采用迭代正则化方法进行了重构。
This is the velocity.
这是它的速度。
The velocity of light is about 300000 kilometres per second.
光速约为每秒300000公里。
This is my time axis, and this is the velocity.
这是时间轴，这是速度。