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Term 1: Term 2:

(subclass SubatomicParticle ElementalSubstance) Merge.kif 1133-1133 次原子粒子元素物质subclass
(subclass AtomicNucleus SubatomicParticle) Merge.kif 1145-1145 原子核次原子粒子subclass
(subclass Electron SubatomicParticle) Merge.kif 1158-1158 电子次原子粒子subclass
(subclass Proton SubatomicParticle) Merge.kif 1163-1163 质子次原子粒子subclass
(subclass Neutron SubatomicParticle) Merge.kif 1168-1168 中子次原子粒子subclass


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