结论：使用氟化钠涂膜与氟化钠溶液相比氟离子与牙釉质接触和反应的时间更长，有效地降低脱矿，提高牙釉质抗酸溶解性。
Conclusion: The time of NaF varnish contact and reaction with enamel was longer than NaF solution to increase acid-resistance and reduce demineralization effectively.
分离后的溶液进行浓缩，分步析出氟化钠、 氟化钾和铷铯氟化物。
Then, sodium fluoride, potassium fluoride and (rubidium, cesium) fluoride was separated by concentrating, stepwise precipiting from the solution.
和包括三聚磷酸钠、硅氟化钠、硫酸钠、氢氧化钠、硬脂酸钙和氯化镁的无机组合物的第二溶液。
The second one, composite inorganic solution, includes sodium tripolyphosphate, sodium silicofluoride, sodium sulphate, sodium hydroxide, calcium stearate and magnesium chloride.
本标准溶液以优级纯氟化钠在超净实验室中准确配制并分装于20毫升安瓿中。
This standard solution was accurately prepared in super-clean laboratory with NaF and sub-packed in 20 ml ampoules.
本标准溶液以优级纯氟化钠在超净实验室中准确配制并分装于20毫升安瓿中。
This standard solution was accurately prepared in super-clean laboratory with NaF and sub-packed in 20 ml ampoules.
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