centre of mass
noun /ˌsentər əv ˈmæs/
/ˌsentər əv ˈmæs/
(US English center of mass)
[usually singular] (plural centres of mass or centers of mass)
(physics- a point that represents the middle position of the matter in a body or system
重心：代表物质在身体或系统中的中间位置的点 - Keeping the centre of mass low improves stability.
保持质心较低可以提高稳定性。 - In these systems, all stars describe their orbits around a common centre of mass.
在这些系统中，所有的恒星都围绕一个共同的质量中心描述它们的轨道。
- Keeping the centre of mass low improves stability.