| 单词 | ozone shield |
| 释义 | Definition of ozone shield in English:ozone shieldnoun Chemistry
Origin1960s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America. Definition of ozone shield in US English:ozone shieldnoun Chemistry
Origin1960s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America. |
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