"speed"和'velocity"的区别
问题描述：
"speed"和'velocity"的区别
答
Speed is only dealing with scalar quantities, which means it only has units like metres, kilometres, etc.
Velocity is a vector quantity, which means it must includes directions such as south, north, east, west etc.
Hope this may help you a little bit.
答
它两都有速度的意思,但是英文同义词和中文同义词不大一样,英文的同义词指的是两个词都包含一大堆意思,其中有些意思是完全相同的,
speed 除了速度名词还有动词的用法,velocity不可以,而且这个词也相当不常用,用起来和speed意思一样