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antiparticle

noun
🔊/ˈæntipɑːtɪkl/
🔊/ˈæntipɑːrtɪkl/, 🔊/ˈæntaɪpɑːrtɪkl/
(physics物理)
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  1. a very small part of an atom that has the same mass as a normal particle but the opposite electrical charge反粒子（与基本粒子质量相同，但电荷相反）
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