钠的

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？

The study discusses how the factors such as calcination temperature,time,the kind of additive and the process after calcination influenced on the content of the alumina in the calcined products,and confirmed the production method.

通过对工业氢氧化铝煅烧试验，探讨了煅烧温度、时间、添加剂种类和煅烧产物后处理等对煅烧产品中氧化钠含量的影响，确定了高温低钠氧化铝的生产方法。

A systematical summary is made of the advance in research on decomposition mechanism of solution aluminate seeds lately.

系统总结了近年来铝酸钠溶液晶种分解过程分解机理的研究进展，并详细地介绍了强化铝酸钠溶液晶种分解的不同方法。

This rock zone, with a NE striking, the whole length of 1 400 km and the width of 100～150 km, is characterized by not onlyalkaline rocks (analcite biotite olivine melilitites, leucititic alnoites, nephelite syenites, aegirite augite syenites, melanite syenites, riebeckite syenite and aegirite bearing quartz syenites) and alkaline granite (riebeckite granite, and aegitite augite riebeckite granite), but also a lot of syenites, monzonites and alkaline feldspar granites or miarolitic K feldspar granites.

该岩带全长约1400km，宽100～150km，不仅发育有狭义的碱性岩(方沸黑云橄榄黄长岩、白榴黄长煌斑岩、霞石正长岩、霓辉石正长岩、黑榴石正长岩和含霓石石英正长岩)和碱性花岗岩(钠闪石花岗岩、霓辉石钠闪石花岗岩)，还发育有大量的正长岩类二长岩类碱长花岗岩或晶洞钾长花岗岩。

Trioxide antinomy can be dissolved in the solution of sodium hydroxide and glycerin to produce sodium antimonite containing glycerin.

甘油、木糖醇等低C多元醇，在有碱参与的条件下能与三氧化二锑很好地发生反应，生成甘油亚锑酸钠、木糖醇亚锑酸钠，溶液在一定的碱浓度下可保持稳定。

The subcutaneous administration of sodium dimercaptosuccinate at a dose of 1500 mg/kg immediately after the intraperitoneal injection of trivalent antimonyl ammonium gluconate increased the LD_(50) of the latter from 90—112 mg/kg to 1300—1460 mg/kg.

皮下注射二巯基丁二酸钠1500毫克/千克，司将小鼠一次腹腔注射锑铵的半数致死量从90—112毫克/千克提高至1300—1460毫克/千克。静脉注身锑~(124)铵予家兔后，如立刻经同一途径注射二巯基丁二酸钠，亦可降低锑铵的急性毒性。

Pretreatment of arsenical refractory gold concentrate - Leaching by sodium dichromate ;2. The solution of sulfuric acid was added dropwise to the reaction vessel contained 1,3-dichloro-2-propanol, sodium dichromate and water.

将硫酸水溶液滴加到1，3-二氯-2-丙醇与重铬酸钠水溶液的混合物中，在温度23~27℃的条件下搅拌反应5 h，重铬酸钠∶1，3-二氯-2-丙醇=1∶2，此条件下收率为79。

One hour later, all of the animals were given each an intraperitoneal injection of 40 mg/kg of pentobarbital sodium or 200 mg/kg of barbital sodium.

结果：氯霉素组和3个剂量的CAD组均可使戊巴比妥钠睡眠时间延长，分别延至溶媒对照组的380%、284%、353%和366%(P.01)；100mg/kg CAD组还可显著延长巴比妥钠催眠潜伏期(P.01)，并缩短其睡眠时间(P.01)。

Results INS SOL (5 U·kg -1 ) containing eucalyptol, sodium caprate, sodium deoxycholate and menthol significantly decreased the blood glucose level ( P 05), and eucalyptol appeared to be more effective 38 8%,...

结果 含桉油醇、癸酸钠、脱氧胆酸钠和薄荷醇的INS SOL(5U·kg-1)均可降低血糖(P 0 5 )，而桉油醇的作用最明显，最大降糖百分数为 38 8%(P 0 1)。

Using the material of carnallite with sodium from Chaerhan salt lake, the production of low - sodium carnallite with inverse floatation method is analyzed in the paper.

通过以察尔汗盐湖的含钠光卤石为原料，对"反浮选法制取低钠光卤石"进行了相图分析，给出了原则性流程，并将生产流程中的相关参数在相图当中予以体现，从而更好地利用相图知识来指导实际生产。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。