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| ozone An allotropic form of oxygen containing three atoms in the molecule. It is a bluish gas, very active chemically, and a powerful oxidizing agent. Ozone is formed when oxygen or air is subjected to a silent electric discharge. It occurs in ordinary air in very small amounts only | |||
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ozons : 32 短语, 2 学科 |
| 化学 | 1 |
| 环境 | 31 |