N any of a group of elementary particles, such as a pion or kaon, that usually has a rest mass between those of an electron and a proton, and an integral spin. They are responsible for the force between nucleons in the atomic nucleus 内消旋体 (Former name mesotron) → see also muon
Mesons have the property of hypercharge.
介子具有超荷性。
Particles, such as pi-mesons, requiring symmetric wave functions are called bosons .
要求对称波函数的粒子，如介子，叫做玻色子。
Bosons include mesons, nuclei of even mass number, and the particles required to embody the fields of quantum field theory.
玻色子包括介子、偶质量数的原子核以及体现量子场论中的场所需要的粒子。
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