center of mass

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. You're not moving, you're in the center of mass.
   你没有移动，你处于质量重心。
3. So it's easy experimentally to find the center of mass.
   所以用实验很容易，找到重心。
4. Well, what was the velocity of the center of mass?
   那，速度是多少呢，质量重心的速度？
5. You see the center of mass?
   看到质量重心了吧？
6. Where is the center of mass of this system?
   这系统的重心何在？
7. And so you can calculate the center of mass.
   你可以计算质量中心。
8. Center of mass below the suspension point.
   重心在悬挂点下面。
9. That's the way the center of mass is defined.
   这就是质量中心的，定义。
10. We want to know what the velocity is of the center of mass of the other one.
    我们想知道，质量重心的速度是多少，对于另一个。
11. I have here a triangle, and I have no clue where the center of mass is.
    这里有个三角形，我不知道，重心在哪里。
12. And the center of mass of this eraser is somewhere in the middle.
    这个橡皮重心在中间的某一点。
13. In particular, we have seen the notion of center of mass.
    特别地，我们学过质心的概念。
14. Because it's a unit disk. And, the center of mass is the center of a disk.
    因为它是一个单位圆盘，这部分的中心就是圆盘的中心。
15. In the case of the center of mass, 0 the total momentum is always zero.
    在质量重心体系中，总动量总是为。
16. Earlier in the course, we calculated where the center of mass was.
    在课程之初我们，计算了重心的位置。
17. In this case, it will rotate about the center of mass, so it's not static equilibrium.
    在这个例子里，它会绕着重心旋转，因此不存在静力平衡。
18. The mass distribution and position of the center of mass of a spring are discussed.
    讨论质量不可忽略的静止弹簧的质量分布和质心位置问题。
19. The velocity of the center of mass is constant in the absence of external forces.
    在无外力时，质心的速度是常量。
20. The concept about the center of inductive electric charge and the center of electrostatic force are introduced by analogy with the center of mass and the center of gravitation.
    类比质心和引力作用中心，引入感应电荷中心和静电引力作用中心概念。
21. For the pendulum, center of mass is here.
    对摆来说，重心在这里。
22. This, by the way it's not so obvious is also the velocity of the center of mass.
    顺便提一下-，这并不明显-，它也是质量重心的速度。
23. Speed Relaxation: The key to going fast is to breathe and relax into the center of mass.
    速度放松：速度更快的关键是用身体中心去呼吸和放松。
24. So this is a disk, and we just discussed the rotation about the center of mass.
    这是圆盘，我们刚讨论过，绕质心旋转。
25. And so now we can calculate the position of the center of mass as follows.
    我们现在可以计算，整体质量的中心位置，可以这样计算。
26. By measuring the swing cycles and balances of the body on the four spring handstand equipment, we can determine not only the inertial moment and products of the body, but also the center of mass.
    通过测量物体在四簧倒立试验台上的摆动周期和平衡，不仅确定了物体的惯性矩和惯性积，也确定了物体的质心位置。
27. The diagonal inertia tensor of mass relative to the center of mass.
    相对于重心的质量的惯性张量对角线。
28. The center of mass relative to the transform's origin.
    相对于变换原点的重心。
29. How do we calculate the velocity of the center of mass?
    我们怎样计算，重心速度呢？
30. A center of symmetry must coincide with the center of mass.
    对称中心必须与质量中心重合。

noun

1. point representing the mean position of the matter in a body

   Synonym:    centre of mass