velocity
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velocity篇(一):velocity 和speed的区别如题,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
velocity篇(二):angular velocity是什么意思
英文：angular velocity中文：角速度例句:What is the angular velocity after the ball has made five complete revolutions? 在球转了五整圈之后,角速度是多少?Since I just want the magnitude of the angular velocity, I can set the gravitational force onthat planet equal to the change in momentum for the case of circular motion. 由于我只需要角速度的大小,因此在圆周运动的情况下,可以设置该行星所受的引力等于动量的变化.The robots also have sensors that measure angular velocity, accelerometers like those thattell airbags when to deploy, motors to run the propellers, and circuitry to control the motorsand batteries. 该种直升机用传感器测量角速率,用加速计来锁定安全气囊的释放位置,用马达来推动螺旋桨,用电路来控制马达和电池.
velocity篇(三):英语中speed 和 velocity 有什么区别的?我在澳洲学物理,这两个是分开的,不一样的意义的,但是中文翻译过来都是速度的意思..
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
