alpha particle

any of the positively charged particles emitted in radioactivity or other nuclear reactions 粒子.

almond, almond paste, almond-eyed, almoner, almost, alms, almshouse, aloe, aloft, alone, along, along with, alongside, aloof, aloofness, aloud, alp, alpaca, alpenstock, alpha, alpha radiation, alpha ray, alphabet, alphabetic, alphabetical, alphabetically, alphabetize, alpine, alpinist, already, alright, Alsatian, also, also-ran, altar, altar-piece, alter, alter ego, alterable, alteration,