氟化钠

With the coordinated interacton of the abrasive particles in dentifrice, can it abrade or corrode dental restorations made from titanium and change their luster and color so as to influence their appearance and long-term use.

含氟牙膏中一般含有氟化钠或单氟磷酸钠，pH值低于7，在摩擦剂的协同作用下是否对口腔中钛制修复体有磨损和腐蚀作用，使其发生失泽和变色，以致影响它的美观和长期使用？

Results interleukin2activity,interleukin2receptor expression of lymphocyte membrane and lymphocyte blastogenesis in peripheral blood were inhibited at and above30PPM concentration of fluorine ion.

结果 当氟离子浓度达30PPM时，即可抑制白细胞介素2活性、淋巴细胞膜白细胞介素2受体表达及外周血淋巴细胞转化功能。结论提示氟化钠具有免疫毒性。

A method of producing crystal sodium fluoride with sodium fluosilicate and sodium carbonate is introduced.

本文介绍了以氟硅酸钠、纯碱为原料生产晶体氟化钠的工艺，并对操作条件作了详细的说明。

In this paper, the composition of zinc phosphating solution used at environmental temperature was researched. The composition is as followings: phosphoric acid 100 mL, monometallic sodium orthophosphate 20 g/L, zinc oxide 25 g/L, bluestone 1 g/L, sodium molybdate 1 g/L, sodium fluoride 1 g/L, tartaric acid 1 g/L.

研究了配制锌系磷化液配方：1 L溶液中加入磷酸100 mL，磷酸二氢钠20 g，氧化锌25 g，硫酸铜1 g，钼酸钠1 g，氟化钠1 g，酒石酸1 g。

After remineralization, the surface structure of samples in Chinese nutgall group and Ag（ NH3 ）2F group became compacter and steadier, with presentation of small blotch and trabs; in NaF group, there was still laeune with trablike structure on the surface of the samples; in deionized group, the surface of samples was honeycomb appearance.

再矿化后，五倍子液和氟化氨银液组表面结构更加致密，均匀，呈小斑块，条索状；氟化钠液组表面也出现条索状结构，但仍有孔隙或腔隙存在；去离子水组表面出现蜂窝状结构。

RESULTS: Before remineralization, through SEM, short blunt eeptoma was found on the surface of lesions of samples in Chinese nutgall group and Ag（ NH3 ）2F group; while in NaF group, globular ecptoma was seen scattering on the surface of the lesions, together with laeune; in deionized group, there was Sharpey＇s fiber.

结果：再矿化前，扫描电镜观察五倍子与氟化氨银处理后牙骨质龋表面形成不规则短钝状突起；氟化钠液组形成大小不一的散在大球状突起，可见一些腔隙存在；去离子水组大量分布夏伯氏纤维。

Group I was the control ,and other four groups ,groupⅡ,Ⅲ,Ⅳ,Ⅴ were fed the diets containing 500,1 000,1 500,2 000 mg/kg of fluorineass odium fluoride, respectively, for 150 days.

第1组为对照组，第2，3，4，5组在日粮中添加不同水平的氟化钠，使日粮中氟含量分别为500，1 000，1 500，2 000 mg/kg，实验期150 d。

Group I was the control ,and other four groups ,groupⅡ,Ⅲ,Ⅳ,Ⅴ were fed the diets containing 500,1 000,1 500,2 000 mg/kg of fluorine as sodium fluoride, respectively, for 150 days.

第 1组为对照组，第 2 ，3，4，5组在日粮中添加不同水平的氟化钠，使日粮中氟含量分别为 5 0 0 ，10 0 0 ，15 0 0 ，2 0 0 0 mg/kg，实验期 15 0 d。

The density of potassium fluotantalate and its mixed melt salt system with sodium chloride, potassium chloride, sodium fluoride and potassium fluoride are measured by Archimedes principle .

用阿基米德法测定了氟钽酸钾及其与氯化钠、氯化钾、氟化钠、氟化钾等混合熔盐体系在熔融状态下的密度，用线性回归分析方法导出了各熔盐体系的密度与温度的关系。

There was no difference in the occurrence of fluorotic tooth and the density of bone trabecula between the rat groups of brick tea induced fluorosis and sodium fluorides.

高硒可以降低氟化钠组大鼠的血氟浓度，但不能明显减轻大鼠氟中毒的病理损伤。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。