📁 Fluoridation
Fluoridation is the addition of fluoride into public drinking water to prevent cavities in the teeth of people who drink it. However fluorine is a poisonous gas and has been shown to be toxic to health.
条目 (0+)
该分类暂时没有条目。
Fluoridation is the addition of fluoride into public drinking water to prevent cavities in the teeth of people who drink it. However fluorine is a poisonous gas and has been shown to be toxic to health.