查询词典 hydrogen fluoride

The fluoride-vanish on the orthodontic treatment of enamel demineralization has significant inhibitory effect.......

氟保护漆对正畸治疗中的釉质脱矿有明显抑制作用。釉质脱矿；氟保护漆；正畸

Objective Discussion fluoride vanish in the orthodontic treatment on enamel demineralization inhibitory effect.

目的：探讨氟保护漆在正畸治疗中对釉质脱矿的抑制效果。

The fluoride-vanish on the orthodontic treatment of enamel demineralization has significant inhibitory effect.

氟保护漆对正畸治疗中的釉质脱矿有明显抑制作用。

Results: The instant effects of Green Or (94.32%) and Gluma desensitizer (93.41%) were better than that of sodium fluoride glycerin (71.83%). One month later, there were no significant differences between 3 groups.

结果：极固宁脱敏组和Gluma脱敏剂的即刻有效率分别为94.32%、93.41%，显著优于氟化钠甘油脱敏组(71.83%)，而脱敏后1个月，3组间无显著性差异。

Methods A total of 147 patients with dentin hypersensitivity were randomly divided into two groups, 74 patients with 215 teeth in treatment group were treated with GLUMA desensitizer, and 73 patients with 186 teeth in control group were treated with 750 g/L sodium fluoride.

选取牙齿感觉过敏症病人147例401个牙，随机分为两组：治疗组74例215个牙，用GLUMA系统处理剂脱敏；对照组73例186个牙，用750g/L氟化钠甘油脱敏，观察两组即刻，1个月，3个月后的疗效。

Objective: To observe the clinical effects of Green Or, Gluma desensitizer and 75% sodium fluoride glycerin on the treatment of root-dentin hypersensitivity after subgingival scaling with ultrasonic instruments and discuss its desensitization mechanism.

目的：评价极固宁、Gluma脱敏剂、75%氟化钠甘油治疗超声龈下刮治所致根面牙本质敏感症的临床疗效，探讨其作用机制。

Methods: 774 dentin hypersensitivity teeth of 99 patients were randomly divided into three groups: Group A-Green Or, Group B-Gluma desensitizer, Group C-75% sodium fluoride glycerin. The results of desensitization in 3 groups were evaluated immediately and 1 month after treatment by using a visual analogue scale.

将99例龈下刮冶术所致的774颗根面牙本质过敏症患牙随机分为3组，即极固宁脱敏组、Gluma脱敏剂组和氟化钠甘油脱敏组，分别进行脱敏治疗，观察即刻、1个月疼痛的VAS值。

Fluoride-free flux ; flux film ; diathermancy ; mineral structure

无氟保护渣；渣膜；传热性；矿物结构

The paper discloses a process for diazotization fluorination of aromatic primary amines utilizing sodium nitrite and anhydrous hydrofluoride to produce the corresponding diazonium fluoride which is decomposed, usually by heat, to make the desired fluoroaromatics .

本文通过重氮化工艺路线的改进，在液态氟化氢中进行重氮化和重氮盐的热分解，提高了芳香族氟化物的收率，并且使重氮化反应工艺能应用于工业化生产。

The samples were discontinuously immersed into soft drink for one week, then treated with different fluoride for another week.

用饮料对釉质间断性酸蚀l周，然后使用不同的氟化物处理酸蚀的釉质表面1周。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。