massless
/mas-lis/US // ˈmæs lɪs //
无质量,无质量的,无量纲,没有质量
Definitions
adj.形容词 adjective
- 1
Physics.
- : pertaining to an elementary particle having zero rest mass, as a photon.
Examples
The subatomic particles are so lightweight, they’re almost massless.
In the inside of one there are fly-wheels, in the inside of the other a massless spring.
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