| 单词 | fluoridation |
| 释义 | fluoridation [flu̇r·ǝ`dā·shǝn] ENGINEERING The addition of the fluorine ion (F-) to municipal water supplies in a final concentration of 0.8-1.6 parts per million to help prevent dental caries in children. GEOCHEMISTRY Formation in rocks of fluorine-containing minerals such as fluorite or topaz. |
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