镁

In the paper ,microstructure evolutions, mechanical properties, small pox phenomenon on the surface, and corrosion mechanism of die-cast magnesium alloy AZ91D,have been investigated and discussed in detail by means of metallography, SEM, tensile strength testing and salt spraying test combined with computer-aided flow in die analysis, some important conclusions are got and listed in the following1 Structure of the die-cast magnesium alloy AZ91D is composed of global-like structure, which is fine and homogeneous, and actinomorphous dendritic grains.

本课题针对AZ91D压铸镁合金，通过金相分析、SEM分析、力学性能测试和盐雾实验，并结合计算机辅助模流分析，对薄壁镁合金压铸件3C产品的显微组织演化，力学性能，爆痘现象和腐蚀机理等进行了较为细致的研究和讨论，得到如下重要结论。

Advance in the study of Neoproterzoic mafic-ultramafic rocks in the western margin of the Yangtze craton has been reviewed in this paper. These rocks consists of 0.95—0.90 Ga orogenic rocks and 0.86-0.74Ga anorogenic rocks, which reflect Neoproterozoic tectonic evolution from arc to intra-continental rift in the area.

本文著重总结和评述了扬子地块西缘的新元古代镁铁超镁铁质岩的最新研究成果，认为这一期岩浆活动是由约0.95~0.90 Ga造山带的岩浆活动和0.83~0.74 Ga非造山的岩浆活动组成，反映了从岛弧到板内裂谷的构造演化模式。

Understand the main traits, clinical uses of Misoprostol,Antiacid,Magnesium Trisilicate,and magnesium sulfate.

了解米索前列醇、抗酸药三硅酸镁、氢氧化铝等药作用特点及泻药硫酸镁等药的作用方式与临床应用。

Therefore, it is very important to improve the anticorrosion performances of magnesium alloys in industrial applications.

因此，在工业上应用中，使镁合金不易腐蚀（直译为：提高镁合金的反腐蚀能力），变得很重要。

This kind of material is had volatile, after the evaporate in alkalescent solution goes out, with titrate of standard acerbity solution, computation its content. Triumphant family name decides 1.2 main instruments and reagent azotic appearance: KJeltecTM2300,; of Swiss FOSS company magnesian, boric acid, hydrochloric acid: The? that treat Ju is magnesian mix hang fluid: 1%.

此类物质具有挥发性，在碱性溶液中蒸出后，用标准酸溶液滴定，计算其含量。1.2主要仪器和试剂凯氏定氮仪：kjeltecTM2300型，瑞士FOSS公司；氧化镁、硼酸、盐酸：分析纯；氧化镁混悬液：1%。

The industrial experimental results showed that magnesium consumption coefficient decreased 13.6%(from 1.591KgMg/KgS to 1.375KgMg/KgS when desulphurization value was ≥0.016%) after bellmouth height-705mm, inclination of lance-11 °, carrier gas flow rate-35Nm~3/h and lance level-2150mm were adopted in industrial production.

通过工业试验，采用优化后的喷枪结构参数和工艺参数，镁消耗系数明显下降。当脱硫量≥0.016％时，镁消耗系数由1.591KgMg／KgS降到1.375KgMg／KgS，降幅达13.6％，效果明显。

Using bischofite as raw materials, Na_2CO_3 as precipitant, basic magnesium carbonate was prepared by liquid deposition method through studying, the suitable process parameters were obtained.

盐湖提钾后的水氯镁石为原料，以Na_2CO_3作沉淀剂，采用化学方法中的液相沉淀法制备碱式碳酸镁。

The results show that the dehydration efficiency improves with the increase of the amount of butanol during the continuous distillation dehydration process;the first four coordinated water molecules in bischofite can be more easily taken away than the last two coordinated water molecules,especially the last one;the ultrasonic pretreatment of the bischofite bu...

研究结果表明：在连续蒸馏法脱水过程中，水氯镁石的脱水率随着丁醇用量的增加而提高；水氯镁石最初4个结晶水分子较容易脱除，后2个结晶水特别是最后1个结晶水难以脱除。

High purity nano-sized magnesium hydroxide was prepared by impinging stream reaction crystallization method using bischofite (from Chaerhan salt lake,in Qinghai Province) as raw material.

采用撞击流反应结晶方法，以青海盐湖水氯镁石为原料，制备了高纯纳米氢氧化镁。

RESULTS:In the Chenxiang Lubailu table,the identification of bismuthic salt positive result with dilute nitric acid instead of hydrochloric acid and the white precepitation formed in identification of magnesian was bismuth hydroxide sediments,it was easy and accurate to identify bismuthic salt by adding ascorbic acid.

结果：该片中的铋盐碘化钾鉴别反应，用稀硝酸代替盐酸做溶剂，呈正反应；镁盐氯化铵-磷酸氢二钠鉴别反应，加氨试液后，析出的白色沉淀不是Mg2，而是Bi3，该沉淀在氯化铵试液中不溶，干扰镁盐鉴别；铋盐含量测定项，用加抗坏血酸掩蔽剂的方法，排除Fe3+的干扰，使终点颜色稳定，易于准确判断。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。