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N any of a group of elementary particles that have the same mass and spin as their corresponding particle but have opposite values for all other nonzero quantum numbers. When a particle collides with its antiparticle, mutual annihilation occurs 反粒子
Another idea suggests that dark matter particles are their own antiparticles.
另一种观点认为：暗物质颗粒同时也是自己的反粒子。
In the same way the proton and neutron should also have their corresponding antiparticles.
同样地，质子和中子也应该有对应的反粒子。
The symmetry between particles and antiparticles is woven deep into the foundations of physics.
粒子与反粒子间的对称性深深地锲入到物理学的基础之中。
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