noun🔗Share质子 A positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element, composed of two up quarks and a down quark."The number of protons in an atom's nucleus defines what element it is. "原子核内的质子数量决定了该原子是什么元素。physicschemistryelementscienceenergysubstancestructuretechnicalcompoundChat with AIVocabulary GamePractice Reading
