oxygen - definition of oxygen by The Free Dictionary

oxygen - definition of oxygen by The Free Dictionary

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日期:2025-05-23
ox·y·gen (k s-j n) n. Symbol O A nonmetallic element constituting 21 percent of the atmosphere by volume that occurs as a diatomic gas, O 2, and in many compounds such as water and iron ore. It combines with most elements, is essential for plant and anima...看更多