(physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the body
rest mass的用法和样例:
例句
A hypothetical particle postulated to be the quantum of gravitational interaction and presumed to have an indefinitely long lifetime, zero electric charge, and zero rest mass. 引力微子一种假想粒子,被假定为引力相互作用的量子,并被推测为具有无限长寿命、零电荷和零静止质量