查询词典 hydrogen fluoride

Fluoride can increase the hardness of the teeth; that calcium fluoride in the enamel of the higher proportion of teeth, the greater the hardness.

答：（1）氟可以增加牙齿的硬度，这在牙齿珐琅质的比例较高氟化钙，硬度越大。

The coefficient of variation of the fluoride determination method was 5% at fluoride concentrations of approx.

在氟化物浓度为大约1000mg/kg的时候氟化物测定方法的变异系数为5%。

The fluoride contents of the samples and daily total fluoride intake are condign to related health standards in Wuhan residents.

武汉市城区饮水、食物、空气中的氟含量及居民的日总摄氟量均在适宜范围内，不需要采取干预措施。

Gold becomes converted into a yellow deliquescent volatile fluoride when heated to low redness, and at a slightly higher temperature the fluoride is dissociated into metallic gold and fluorine gas.

黄金成为改为黄色潮解挥发性低氟当加热到发红，并在一个稍高的温度氟分为金属黄金和氟气分离。

Sodium fluoride and sodium monofluorophosphate dentifrice(F 1.450 mg/L) in reversal of early caries were better than non-fluoride one.

2种氟浓度1 450 mg/L的牙膏与无氟牙膏比较，具有明显的抑制牙釉质光滑面早期龋损脱矿的作用。

Conclusio Sodium fluoride and sodium monofluoropho hate dentifrice(F 1.450 mg/L) in reversal of early caries were better than non-fluoride one.

2种氟浓度1 450 mg/L的牙膏与无氟牙膏比较，具有明显的抑制牙釉质光滑面早期龋损脱矿的作用。

Methods Enamel surface specimens were randomly allocated into 3 groups: 1 450 mg/L sodium fluoride dentifrice group, 1 450 mg/L sodium monofluorophosphate dentifrice group and non-fluoride dentifrice control group. Sound enamel surfaces were dematerialized in bacteria model in vitro. QLF was used to analyze the area of lesionsArea, the loss of fluorescenceΔF and ΔQArea×ΔF on enamel surfaces after demineralization.

将30个牙釉质块开窗后分为3组，分别使用氟含量1 450 mg/L的氟化钠牙膏、单氟磷酸钠牙膏和无氟牙膏的处理液处理，并在体外恒化器龋病模型中进行脱矿循环，定量光导荧光技术QLF分析病损脱矿后的面积、荧光损失和总荧光损失量，激光扫描共聚焦显微镜CLSM分析脱矿后矿物质含量变化。

Methods Enamel surface specimens were randomly allocated into 3 groups: 1 450 mg/L sodium fluoride dentifrice group, 1 450 mg/L sodium monofluorophosphate dentifrice group and non-fluoride dentifrice control group. Sound enamel surfaces were dematerialized in bacteria model in vitro. QLF was used to analyze the area of lesions, the loss of fluorescence and ΔQ on enamel surfaces after demineralization.

将30个牙釉质块开窗后分为3组，分别使用氟含量1 450 mg/L的氟化钠牙膏、单氟磷酸钠牙膏和无氟牙膏的处理液处理，并在体外恒化器龋病模型中进行脱矿循环，定量光导荧光技术分析病损脱矿后的面积、荧光损失和总荧光损失量，激光扫描共聚焦显微镜分析脱矿后矿物质含量变化。

Enamel surface ecime were randomly allocated into 3 grou : 1 450 mg/L sodium fluoride dentifrice group, 1 450 mg/L sodium monofluoropho hate dentifrice group and non-fluoride dentifrice control group. Sound enamel surfaces were dematerialized in bacteria model in vitro. QLF was used to analyze the area of lesio, the lo of fluorescence and ΔQ on enamel surfaces after demineralization.

将30个牙釉质块开窗后分为3组，分别使用氟含量1 450 mg/L的氟化钠牙膏、单氟磷酸钠牙膏和无氟牙膏的处理液处理，并在体外恒化器龋病模型中进行脱矿循环，定量光导荧光技术分析病损脱矿后的面积、荧光损失和总荧光损失量，激光扫描共聚焦显微镜分析脱矿后矿物质含量变化。

A total of one hundred fifty three healthy male and female adults were entered into a six month,doubleblind clinical study designed to evaluate the effect of a dentifrice containing 0.3% triclosan and 2.0% PVM/MA copolymer in a 0.243% sodium fluoride/silica base, relative to a 0.243% sodium fluoride silica base control dentifrice on supragingival plaque accumulation and gingivitis.

本研究的目的是证实含0.3％三氯羟苯醚，2.0％PVM／MA及0.243％氟化钠以二氧化硅磨料牙膏在减少菌斑积聚和牙龈炎形成方面对中国成年人群的效果。153名健康男女分为实验组及对照组，用双盲法评价6月后临床效果。采用纳入和排除的评价标准后进行了基线检查，实验对象每日使用分配的牙膏和软毛牙刷早晚刷牙一次，3个月和6个月再次检查。检查结果表明，使用含有三氯羟苯醚－共聚体牙膏组与使用不含该成分的对照组相比，实验对象的牙菌斑、牙龈炎指数分别减少16.1％及24.3％，均有统计学显著性意义（P＜0.001）。

It is suggested that TDS can be used as a new method for the analysis of pedogenesis and climatic change.

总之，热处理过程中磁化率的变化能非常灵敏地反映磁性矿物的转化情况，而且，这种转化往往与样品所经历的土壤化作用强度密切相关，因此，TDS可做为分析成土作用强度和古气候变化的一种新方法。

Therefore, in this chapter, I will research into the conflict and contradiction of the paternity. Also, in this novel, the father's behavior of "He who loves well chastises well." is quite suspicious, one of the reasons is that the father thought his son belonged to him. And then, this thesis quoted Lacan's theory to touch upon that someone who has accepted the concept of patriarchal society, he will be influenced for his whole life. That also reveals that human being has no choice sometimes in this society.

因此本章会先就父子关系的冲突与矛盾做深入的探讨，小说中的父亲似有对儿子爱之深责之切的行为，其原因可能在於父亲将儿子视为所有物所致；其次，论文将引用拉冈相关理论，讨论在父权社会中，不论身分为何，只要是已受父权社会观念根深蒂固影响的人物，终生都将受其所苦，此也揭示出人生存於社会上的无奈。