最小时间片

The cold light fair instrument principle is to lie a wave-length the high strength between the 480-520 nanometers is only blue, through more than 12000 roots, the total length more than 1 mile fiber-optic conductions, again pass 2 slices Be plated the optical mirror slice of film processing by 30 many times, separate place the whole harmful purple outside and only with infrared ray, irradiation go to daubery on the special fair on the tooth, in the shortest time inside make fair through tooth essence small tube and many in the last years the deposition oxidize revivification function in the tooth surface and the deep dye creation and make the tooth returned to before having not yet dye of pure.

冷光美白仪原理是将波长介于480-520nanometer之间的高强度蓝光，经由12000多根、总长度超过一英哩的光纤传导，再通过两片经30多次镀膜处理的光学镜片，隔处了一切有害的紫外光与红外线，照射到涂抹在牙齿上的特殊美白剂上，在最短的时间内使美白剂透过牙本质小管与多年来沉积在牙齿表面及深层的色素产生氧化还原作用，使牙齿回到未经染色前的洁白。

When proceeding the research of drug identification by ultraviolet spectrophotometry, this paper adopts the approaches below: to identify Metronidazole Buccal Tablets and Potassium Sodium Dehydroandroan Drographolide Succinate by ulviolet maximum absorbent wavelength; to identify Metronidazole Disodium Phosphate for Injection by ulviolet maximum absorbent wavelength and minimum absorbent wavelength; to identify Ceftriaxone Sodium for Injection and Clarithromycin Tablets by retention time of high performance liquid chromatography- ultraviolet spectrophotometry.

通过测定紫外最大吸收波长λ_(max鉴别甲硝唑口颊片和炎琥宁、测定紫外最大吸收波长λ_(max和最小吸收波长λ_(min鉴别注射用甲硝唑磷酸二钠，结合高效液相色谱(high performance liquid chromatography-ultraviolet detector，HPLC-UV)中保留时间的测定鉴别注射用头孢曲松钠和克拉霉素片，本文建立了药物鉴别的紫外分光光度法。

The research indicates that:(1) detecting λmax (277nm) can identify Metronidazole Buccal Tablets prepared by Chongqing Medical College;(2) detecting λmax (321nm) and λmin (265nm) can identify Metronidazole Disodium Phosphate for Injection prepared by Chongqing Medical College;(3) detecting tr (6.7min) in HPLC-UV spectrum can identify Ceftriaxone Sodium for Injection prepared by Chongqing Keru Pharmacy Co.;(4) detecting tR (10.2min) 6.7min in HPLC-UV spectrum can identify Clarithromycin Tablets prepared by Harebin Yida Pharmacy Co.;(5) detecting λmax (254nm) can identify Potassium Sodium Dehydroandroan Drographolide Succinate prepared by Hong Kong Yaohen Co..

结果表明：①测定紫外最大吸收波长λ_(max277nm可鉴别重庆医科大学医药研究所制备的甲硝唑口颊片；②测定紫外最大吸收波长λ_(max321nm和最小吸收波长λ_(min265nm可鉴别重庆医科大学医药研究所制备的注射用甲硝唑磷酸二钠；③测定HPLC-UV中的保留时间(t_R6.7min)可鉴别重庆科瑞制药股份有限公司制备的注射用头孢曲松钠；④测定高效液相色谱的保留时间(t_R10.2min)可鉴别哈尔滨伊达制药厂提供的克拉霉素片；⑤测定紫外最大吸收波长(又max254nm)可鉴别香港耀恒公司提供的炎琉宁。

If the idea of a wallet constructed out of two hard drive platters sounds enticing, you very well may be one of the most hardcore gadget lovers of all time.

如果构造出两个硬盘驱动器盘片的想法听起来诱人的一个钱包，你很可能是最铁杆的所有时间小工具爱好者之一。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。