| 词汇 | oxygen |
| 释义 | oxygen /`ɑksәdʒәn/ /`ɑksɪdʒәn/ n. An active, colorless, odorless, gaseous element (O; at. no. 8; at. wt. 15.9994), essential to all vegetable and animal life, constituting about one fifth of the total volume of the atmosphere, and occurring as a constituent of water and of most animal and vegetable products, acids, bases, and salts. 【化】氧(元素符号 O；原子序 8；原子量 15.9994)。 idoms oxygen acid 【化】含氧酸。(= oxyacid) oxygen mask 氧气面罩。 oxygen tent 氧气帐罩(重病患使用)。 derivatives adj. oxygenic. adv. oxygenically. adj. oxygenous. |
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