| 单词 | proton |
| 释义 | Word Frequency proton(ˈprəʊtɒn) noun 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 spin1⁄2 Word origin C20: from Greek prōtos first |
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