chemical element
US /ˈkem.ɪ.kəl ˈel.ɪ.mənt/
UK /ˈkem.ɪ.kəl ˈel.ɪ.mənt/
1.
化學元素
a species of atoms having the same number of protons in their atomic nuclei
:
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Oxygen is a common chemical element.
氧氣是一種常見的化學元素。
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The periodic table organizes all known chemical elements.
元素週期表收錄了所有已知的化學元素。