antiparticle

名词 antiparticle:

1. a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy

an.ti.par.ti.cle

n.（名词）
A subatomic particle, such as a positron, an antiproton, or an antineutron, having the same mass, average lifetime, spin, magnitude of magnetic moment, and magnitude of electric charge as the particle to which it corresponds but having the opposite sign of electric charge, opposite intrinsic parity, and opposite direction of magnetic moment.See table at subatomic particle
反粒子：一种亚原子粒子，如正电子、反质子或反中子，与它相对应的粒子有相同的质量、平均寿命、核量子数、磁矩量和电荷量，但具有相反的电荷标志、内在均势和磁矩方向参见 subatomic particle