Objective: To prevent enamel opaque spot after orthodontic etching.
目的：预防口腔固定正畸酸蚀牙釉白斑的发生。
Conclusion: Fluoride treatments can reduce the incidence rate of enamel opaque spot after orthodontic etching.
结论：氟化处理可降低口腔固定正畸患者釉白斑的发生率。
SpotCloud differs from other spot markets in that it is "opaque" : the firms offering capacity do not have to reveal their identity.
云计算不同于其他新兴市场，因为他是透明的，提供计算能力的公司没有隐藏自己的身份。
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