查询词典 fluorine

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。

It indicates that they have need to sorb different amount of fluorine.

雄性燐虾与雌性燐虾对氟的吸收和需求不同。

First, dissolving inorganic salts, strontium nitrate, bismuth nitrate and fluorine tantalum acid were chosen to substitute for the traditional metal organic salts as precursor to prepare SrBi〓Ta〓O〓 thin films.

本文首先选用可溶性无机盐原料替代传统的金属有机物盐类作SrBi〓Ta〓0〓薄膜的前驱体。

In medical industry,it is used in the production of cephalosporin V, sulfanilamide -6-methoxamine pyrimidine,fluorine pyrimidine.

还作为溶剂、金属防腐剂、环氧树脂固化剂、聚酯的固化促进剂、乙烯类化合物聚合时的助催化剂等。

After hot carrier stress, devices were evaluated by using positive bias temperature instability test. With different trends in the time evolution of threshold voltage shift and sub-threshold swing degradation, it is found that electron trapping in the HfO2 is the major reason for the threshold voltage variation. Compared to control devices, devices with fluorine and nitrogen exhibit good passivation at the interface. Devices were measured at an elevated temperature.

在热载子效应后，接著进行正偏压温度不稳定的量测方法，从随时间变动的临界电压以及次临界摆幅，发现临界电压的变动趋势与临界摆幅变动趋势不符合，表示二氧化铪的原生缺陷补捉是造成临界电压变动的主因，而临界摆幅的变动也可得知有氟，氮处理元件具有比较好的介面可靠度。

On the other hand, fluorine implanted into silicon substrate will enhance channel transconductance.

若将氟离子布离进入矽基板上，能够增加通道的转移电导。

The heaviest noble gas, it is colourless, odourless, tasteless, radioactive, and almost completely unreactive (forming compounds only with fluorine).

氡是最重的稀有气体，无色，无臭，无味，有放射性，相对不活泼。

This study may provide a new method to obtain non-fluorine and controllable wettability of nanostructured surfaces.

以上研究结果为制备无氟、可控的超疏水纳米界面材料的研究提供新的理论及实践依据。

That important Beijing He central authority air-conditioning is kept in repair is special field be engaged in every brand after central authority air-conditioning sells keep an unit in repair , the company maintains from setting up so far consistently devote self to being that the consumer provides high grade , reliable (central authority air-conditioning , the country who designs that installation , the windway wash , add a fluorine the to maintenance a coordinated process service company) possessions to be maintained , assembles personnel It both works the grade certificate issuing.

北京大贺中央空调维修是专业从事各品牌中央空调售后维修单位，公司自成立至今一直致力于为用户提供优质、可靠的中央空调维修、设计安装、风道清洗、加氟保养一条龙服务）公司所有维修、安装人员都有国家劳动部颁发的等级证书。

Preventing teeth decay: People normally believe that the fluorine in the tea can increase the resistance of the teeth enamel to the erosion of the acid, so that the tea can prevent teeth decay. Actually, it is also because that the acacatechin can strongly refrain the Streptococus mutans.

预防龋齿：茶叶防龋作用，一般认为是茶中的氟，而使牙釉质对酸的侵蚀具抵抗力，但是儿茶素类能强烈抑制生龋菌也功不可没。

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。