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subatomic particle

noun
🔊/ˌsʌbəˌtɒmɪk ˈpɑːtɪkl/
🔊/ˌsʌbəˌtɑːmɪk ˈpɑːrtɪkl/
(physics物理)
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  1. a very small piece of matter, such as an electron or a proton, that is smaller than an atom 粒子compare elementary particle