1·It will remind you of center of mass and all that.
它将来会让你想起质心等等。
2·This is the center of mass.
物体的中心在这里。
3·You see the center of mass?
看到质量重心了吧？
4·And so you can calculate the center of mass.
你可以计算质量中心。
5·For the pendulum, center of mass is here.
对摆来说，重心在这里。
6·The center of mass must be somewhere here.
重心肯定是这里某处。
7·Center of mass below the suspension point.
重心在悬挂点下面。
8·Where is the center of mass of this system?
这系统的重心何在？
9·So this is the velocity of the center of mass.
这就是重心速度。
10·You're not moving, you're in the center of mass.
你没有移动，你处于质量重心。