英语词汇“proton”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

　

单词	proton
释义	WordReference Random House Learner's Dictionary of American English © 2024 pro•ton /ˈproʊtɑn/USA pronunciation n. [countable] Physicsa positively charged particle found in all atomic nuclei:The number of protons in an atom equals that element's atomic number. WordReference Random House Unabridged Dictionary of American English © 2024 pro•ton (prō′ton),USA pronunciation n. [Physics, Chem.] Physicsa positively charged elementary particle that is a fundamental constituent of all atomic nuclei. It is the lightest and most stable baryon, having a charge equal in magnitude to that of the electron, a spin of ½, and a mass of 1.673 × 10-²⁷ kg. Symbol: P noun, nominal use of Greek prôton, neuter of prôtos first 1915–20 pro•ton′ic, adj. Collins Concise English Dictionary © HarperCollins Publishers:: proton /ˈprəʊtɒn/ n a stable, positively charged elementary particle, found in atomic nuclei in numbers equal to the atomic number of the element. It is a baryon with a charge of 1.602176462 × 10^–19 coulomb, a rest mass of 1.672 62159 × 10^–27 kilogram, and spin ½ Etymology: 20th Century: from Greek prōtos first
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