velocity 和speed的区别

Posted 2023-04-07

如题，好像都是说速度

难道velocity 还有方向？？

speed是rate，那么velocity 是什么？

speed就是指速度，是一个比较非正式的口语化单词
velocity是一个专业词汇，一般学过物理的都知道v时表示速度，这里的v就是velocity的缩写，v是一个矢量，当然是同时表示方向和速度。另外speed其实也有表示速率的意思，那可以总结为velocity = speed + direction 参考技术A 在日常用语中，这两个词没有区别，可以通用。而在物理学里，velocity 是一个矢量(vector quantity)表示起点与终点间直线距离的长度除以所用时间所得的量，并注明方向：而 speed 是一个数量(scalar quantity)，是指起点到终点所走过的所有路程除以所用时间所得的量，且不标明方向。
拓展资料
velocity
noun
[U, C]
【不规则形式】 pl. -ies
1
(technical 术语) （沿某一方向的）速度
the speed of sth in a particular direction
the velocity of light
光速
to gain/lose velocity
加 / 减速
a high-velocity rifle
高速步枪
2
(formal) 高速；快速
high speed
Jaguars can move with an astonishing velocity.
美洲豹跑起来速度惊人。
speed
noun
运动 / 行动速率 rate of movement/action
1
[C, U] （运动的）速度，速率
the rate at which sb/sth moves or travels
He reduced speed and turned sharp left.
他减慢速度，向左急转。
The train began to pick up speed (= go faster) .
火车开始加速。
The car was gathering speed .
汽车逐渐加速。
a speed of 50 mph/80 kph
每小时50英里 / 80公里的速度
at high/low/full/top speed
以高 / 低 / 全 / 最高速
at breakneck speed (= fast in a way that is dangerous)
以不要命的速度
travelling at the speed of light/sound
以光速 / 音速行进
see also airspeed, ground speed
2
[C, U] （发生或进行的）速度；进度
the rate at which sth happens or is done
the processing speed of the computer
计算机的处理速度
This course is designed so that students can progress at their own speed.
这门课的设计思路是让学生自己掌握进度。
We aim to increase the speed of delivery (= how quickly goods are sent) .
我们力争提高送货速度。
3
[U] 快；迅速
the quality of being quick or rapid
The accident was due to excessive speed.
事故的原因在于速度过快。
She was overtaken by the speed of events (= things happened more quickly than she expected) .
事态发展迅速为她始料所不及。
(formal) A car flashed past them at speed (= fast) .
一辆汽车从他们身边疾驰而过。
摄影 in photography
4
[C] 感光度
a measurement of how sensitive film for cameras, etc. is to light
5
[C] 快门速度
the time taken by a camera shutter to open and close
shutter speeds
快门速度 参考技术B

speed指运动的速度,既可指快速,也可指慢速; velocity表示沿一定路线运动的速度,通常指直线、弧线或圆周运动的速度,这个词可与speed通用,但多用于科学技术方面。

一、velocity词汇分析

音标：英 [vəˈlɒsəti]   美 [vəˈlɑ:səti]  

释义：速率，速度;周转率;高速，快速

拓展资料

1、To remove the ambiguity, these laws should refer to the velocity and the acceleration of the center of mass. 

要避免含糊，这些定律所指的应当是质心的速度和加速度。

2、Gazelles can move with astonishing velocity. 

羚羊跑起来有时速度惊人。

3、A liquid drop removed from a sheet or jet may be exposed to the aerodynamic pressure effect of a high relative gas velocity. 

离开液膜或射流的液滴，可能会受到高的相对速度气体的气动压力影响。

4、The current velocity of the flood stood at3.6 metres per second. 

洪水流速为每秒三点六米。

二、speed词汇分析

音标：英 [spi:d]   美 [spid] 

释义：速度;快速;昌盛;（汽车的）变速器，排挡

拓展资料

1、This course is designed so that students can progress at their own speed.

这门课的设计思路是让学生自己掌握进度。

2、We aim to increase the speed of delivery (= how quickly goods are sent) .

我们力争提高送货速度。

3、Are you up to speed yet on the latest developments?

你了解最新的进展情况吗？

4、He put on an impressive turn of speed in the last lap.

他在最后一圈猛然加速。

参考技术C 简单来说就是 speed一定是正的
velocity因为是向量可正可负，取决于你定的方向 参考技术D Speed is the absolute value of velocity. (Speed=|v(t)|=|ds/dt|)

英语中speed 和 velocity 有啥区别的

在日常用语中，这两个词没有区别，可以通用。而在物理学里，velocity 是一个矢量(vector quantity)表示起点与终点间直线距离的长度除以所用时间所得的量，并注明方向：而 speed 是一个数量(scalar quantity)，是指起点到终点所走过的所有路程除以所用时间所得的量，且不标明方向。
拓展资料
velocity
noun
[U, C]
【不规则形式】 pl. -ies
1
(technical 术语) （沿某一方向的）速度
the speed of sth in a particular direction
the velocity of light
光速
to gain/lose velocity
加 / 减速
a high-velocity rifle
高速步枪
2
(formal) 高速；快速
high speed
Jaguars can move with an astonishing velocity.
美洲豹跑起来速度惊人。
speed
noun
运动 / 行动速率 rate of movement/action
1
[C, U] （运动的）速度，速率
the rate at which sb/sth moves or travels
He reduced speed and turned sharp left.
他减慢速度，向左急转。
The train began to pick up speed (= go faster) .
火车开始加速。
The car was gathering speed .
汽车逐渐加速。
a speed of 50 mph/80 kph
每小时50英里 / 80公里的速度
at high/low/full/top speed
以高 / 低 / 全 / 最高速
at breakneck speed (= fast in a way that is dangerous)
以不要命的速度
travelling at the speed of light/sound
以光速 / 音速行进
see also airspeed, ground speed
2
[C, U] （发生或进行的）速度；进度
the rate at which sth happens or is done
the processing speed of the computer
计算机的处理速度
This course is designed so that students can progress at their own speed.
这门课的设计思路是让学生自己掌握进度。
We aim to increase the speed of delivery (= how quickly goods are sent) .
我们力争提高送货速度。
3
[U] 快；迅速
the quality of being quick or rapid
The accident was due to excessive speed.
事故的原因在于速度过快。
She was overtaken by the speed of events (= things happened more quickly than she expected) .
事态发展迅速为她始料所不及。
(formal) A car flashed past them at speed (= fast) .
一辆汽车从他们身边疾驰而过。
摄影 in photography
4
[C] 感光度
a measurement of how sensitive film for cameras, etc. is to light
5
[C] 快门速度
the time taken by a camera shutter to open and close
shutter speeds
快门速度 参考技术A 我在别处找的,你看看
speed
[spi:d]
n.
速度,速率
Our speed averaged out at 50 km an hour.
我们的平均速度是每小时50公里.
快速,迅速
Everyone was surprised by the speed with which the dispute was settled.
每个人都为这一争端解决得如此之快而感到吃惊.
vt.& vi.
急行; 加速
He sped his car through the street.
他开车飞速地穿过街道.
vi.
超速行驶
Was I really speeding,officer?
警官,我真的超速行驶了吗?
用法词典
speed
来自古英语 sped >
同义词：velocity swiftness fastness speeding amphetamine pep pill upper rush hotfoot hasten hie race accelerate speed up quicken hurry zip
简明英汉词典
velocity
[viˈlɔsiti]
n.
速度
A bullet goes from this gun with a velocity of 3000 feet per second.
此枪射出的子弹,其速度为每秒3000英尺.
同义词：quickness speed swiftness本回答被提问者和网友采纳