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alpha particle

noun
/ˈælfə pɑːtɪkl/
/ˈælfə pɑːrtɪkl/
(physics物理)
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  1. a particle with a positive electrical charge that is emitted (= sent out) by some radioactive substances and is identical to (= the same as) the nucleus of a helium atom* α 粒子Topics Physics and chemistryc2

See also: alpha particle

alpha particle

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