《饮用水中的氟化物》是世卫组织系列专著之一，这些专著论述对饮用水中的其他化学品的管理，比如砷或微囊藻毒素。
Fluoride in Drinking-water is one out of a series of WHO monographs, which address the management of other chemicals in drinking-water, such as arsenic or cyanotoxins.
这么说是因为一项新研究表明氟化物形成的保护膜比专家们料想的还有薄。
Because a new study shows that fluoride forms a thinner protective shield than experts thought it did.
一些公司选择了接受三氟化氮的替代品来解决这个问题。
Some companies are solving the problem by adopting alternatives to nitrogen trifluoride.
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