chemical element
US /ˈkem.ɪ.kəl ˈel.ɪ.mənt/
UK /ˈkem.ɪ.kəl ˈel.ɪ.mənt/
1.
化学元素
a species of atoms having the same number of protons in their atomic nuclei
:
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Oxygen is a common chemical element.
氧气是一种常见的化学元素。
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The periodic table organizes all known chemical elements.
元素周期表收录了所有已知的化学元素。