(physics) the mass of a body regarded relativistically as energy
双语例句
The theory set forth new and farreaching conclusions about the nature of space, time, motion, mass, energy, and the relations governing all these. 这个理论清楚地阐述了一种新的、影响深远的有关空间、时间、运动、质量、能量的特性及控制这些的关系的结论。
