constant velocity

基本解释

We did a demonstration there with two vibrating objects with a spring, but yet the center of mass was moving with a constant velocity.
我们做过演示的,弹簧连接两个振动物体，但是质量重心,却保持稳定速度。
Setiawan and colleagues at Max Planck and the European Space Agency noticed that the star didn't move at a constant velocity relative to our sun.
塞蒂亚万和马普学会的同事们以及欧洲航天局的同事们注意到：相对于我们的太阳来说，恒星HIP 13044并没有以恒定的速度移动。
huzhangao.blog.163.com
Then the center of mass, but only the center of mass, would have a velocity that never changes, because if there's no external force then there is only a constant velocity.
那么整体的中心，也仅仅是整体的中心，会有一个不变的速度，因为它不受外力,它有一个持续的速度。

If I am an inertial observer, another person moving relative to me at constant velocity will also be an inertial observer.
如果我是惯性观察者,那另一个相对于我做匀速运动的人,也是一个惯性观察者
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But things which were at rest will move at a constant velocity, opposite of the velocity that you have relative to me.
这些静止的东西都在匀速运动,方向正好跟你相对我运动的速度方向相反
耶鲁公开课 - 基础物理课程节选
The great discovery that Galileo and Newton made is that you don't need a force for a body to move at constant velocity.
伽利略和牛顿的伟大发现就是,物体不需要力来维持匀速运动
耶鲁公开课 - 基础物理课程节选

The average two-wheel-drive car carries four such parts, known as constant-velocity joint (CVJ) halfshafts.
FORBES: Beefing up the rump