Solution to lower pH values and the existence of fluoride ion can accelerate the release of Ti ions.
3.溶液pH值的降低和氟离子的存在能够加速Ti离子的释放。
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Method Fluoride ion selective electrode method was used.
方法采用氟离子选择电极法。
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Method To use fluoride ion - selective electrode method.
方法氟离子选择电极法。
METHOD: Fluoride ion selective electrode assay was adopted.
方法：采用氟离子选择电极法进行测定。
Explain how a fluoride atom can change into a fluoride ion.
BBC: Queen's Speech debate: Education and health
The level of concentration in water had a "negligible effect" on people's uptake of the fluoride ion - responsible for increased risk of fractures, they said.
BBC: Fluoride 'does not cause fractures'
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