zài / héwùlǐxué / zhōng / yuánzǐhé / yóu / zhìzǐ / hé / zhōngzǐ / děng / hézǐ / zǔchéng

在核物理学中，原子核由质子和中子等核子组成。

In nuclear physics, an atomic nucleus consists of nucleons such as protons and neutrons.