查询词典 hydrogen fluoride

Diameter 210mm calcium fluoride crystal has been grown by Bridgman-Stockbarger method.

采用Bridgman-Stockbarger法生长出直径为210mm的氟化钙晶体。

At present, one phase of the project (treatment date 200 tons of ore) flotation of calcium fluoride on the production line May 20, 2007 put into operation, product to meet special GB.

目前，一期工程日处理原矿200吨）的氟化钙浮选生产线已于2007年5月20日建成投产，产品达到国标特。

By the key element of optical system is the crystal of fluoride calcium the thickness of5mm, on which diamond tool substituted the concentric circles, which reflect and which focus the light, which falls into the outward flange 60- mm of objective.

由关键因素是光学系统的晶体氟化钙的厚度5毫米，其中金刚石工具取代的同心圆，反映并重点考虑，这属于外向法兰60 -毫米的目标。

That deeply discusses the specialty of calcium and fluoride in saliva and plaque, and makes clear the rule of conversion and reciprocity of it will be important meaning to clear the pathogenesis of caries, and advance remineralization of dental, and effectively process the forecast and prevent and therapy of caries.

深入探讨唾液、菌斑中氟离子、钙离子的生物学特性，研究其转换代谢规律、相互作用以及各种影响因素，对探明龋病的发病机理，促进牙齿硬组织的再矿化，有效地进行龋病的预测、预防和治疗等均有重要意义。

Calcium fluoride: new properties for an old material.

新型光学材料北京：科学出版社，1991.56～60

The activity of SOD greately increased in the low calcium +fluoride group, but the activity of GPX decreased in this group.

综合本实验结果和我们实验室以往多次检测情况来看，使用传统的氧化应激指标（如MDA、GPX、SOD、CAT等）其结果不甚一致。

To pretreatment human hair samples by burning oxygen bottles, with a total strength as absorbent, and then use of fluoride ion electrode as directed electrode, and saturated calomel electrode as the reference electrode. To determine with improved Gran's Drawing with a satisfactory result.

用氧瓶燃烧法预处理人发样品，以总离子强度剂兼作吸收剂，然后直接用氟离子选择电极作指示电极，饱和甘汞电极作参比电极，用改进Gran's作图法进行测定，结果满意。

The calvarium of offsprings was used to investigate the effects of fluoride on ul-trastructure by LM and TEM.

NaF浓度为3户nunoUL时，抑制了细胞的活性／期细胞数明显增多，G／M期细胞明显减少。

Objective: To investigate the relationship between the content of fluoride in deciduous enamel and caries status in children.

目的：探讨乳牙釉质氟元素的分布及其与龋病状况之间的关系。

Results The incidence of caries was reduced with fluoride after 2 to 3 years.

结果试验组与对照组比较，其患龋率，龋均在用药2～3年后明显降低。

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。