The mass of a body when it is not moving relative to an observer.
rest mass 30秒了解
- (noun) The mass of a body when it is not moving relative to an observer.
Meanings
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1
noun The mass of a body when it is not moving relative to an observer.
Summary
The mass of a body when it is not moving relative to an observer.
- (noun) The mass of a body when it is not moving relative to an observer.
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