centre of mass

noun

🔊/ˌsentər əv ˈmæs/

(US English center of mass)

[usually singular]

(plural centres of mass or centers of mass)

(physics物理)

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a point that represents the middle position of the matter in a body or system
- Keeping the centre of mass low improves stability.使质心保持较低可提高稳定性。
- In these systems, all stars describe their orbits around a common centre of mass.在这些系统中，所有恒星都围绕一个共同的质心描述它们的轨道。