镁

The magnesium in rare earth-magnesium intermediate alloy was determined by flame atomic absorption spectrometry with the hyposensitive line of magnesium (202.5 nm) as the analytical line.

以镁的202.5nm次灵敏线为分析线、火焰原子吸收光谱法测定了电解稀土－镁中间合金中的镁含量。

For Megnesia RCC, AVS of the group with additive magnesia is smaller than that of without additive magnesia.

对于氧化镁碾压混凝土，外掺氧化镁碾压混凝土的自变相对于不外掺氧化镁碾压混凝土的收缩变形小，强度稍有提高。

MgO-C major producers, aluminum MgO-C, Al-Mg is not brick, aluminum spinel carbon bricks, low-carbon non-carbon brick, aluminum silicon carbide bricks, skateboards brick, nozzle brick, block bricks, a steel I brick, air brick, precast tundish board,×, brick, iron groove materials, castables, gunning materials, the bottom tie material, combined with 13 major series, etc.

主要生产镁碳砖、铝镁碳砖、铝镁不烧砖、铝尖晶石碳砖、低碳无碳砖、铝碳化硅砖、滑板砖、水口砖、座砖、出钢口砖、透气砖、中间包预制板、高铝砖、粘土砖、铁沟料、浇注料、喷补料、炉底打结料、结合剂等13大系列40多个品种，产品畅销国内30多家大中型钢铁企业，并出口德国、乌克兰、澳大利亚、越南和伊朗等20多个国家和地区。

Two methods for the determination of magnesium in rare earth-magnesium middle alloy by EDTA titrimetry, i. e. oxalic acid precipitation and ammonium hydroxide precipitation, were studied.

研究了分别采用草酸和氢氧化铵沉淀分离稀土镁中间合金中的稀土，EDTA络合滴定法快速测定电解稀土镁中间合金中镁的两种方法。

In the high-grade metamorphism and anatexis process, in which sapphirine was formed, the multistage crystallization of minerals resulted in the complexity of the mineral association, such as the differentiation of leuco-and melano-components. Generally, the mafic-rich minerals formed earlier, and the differentiation of magnesio-and iron-components is responsible for the earlier presence of ironrich minerals, i.e., magnesio-rich minerals crystallized later, thus the successive associations of multistage occurred.

在形成假蓝宝石的高级变质-深熔作用过程中，岩石矿物组合的变化主要是多阶段变质造成的，如浅-暗色组分发生了分离，其中含镁铁组分多的矿物较早结晶，而镁铁组分的分离使得相对富Fe的矿物较早结晶，即晚期形成的镁铁质矿物更富Mg组分，并形成递进演化的不同阶段的组合。

Study on the phosphorate minerals assemblage shows that strongly developed anatexis of the area is responsible the occurrence of wagnerite and its coexistence with apatite, and both present as rock-forming minerals. The volatiles F, P and components Ca, Mg determine the formation of wagnerite, while the P-T condition affects the variation of wagnerite polytypes.

通过磷酸盐矿物组合的岩石学研究得知强烈发育的深熔作用导致氟磷镁石与磷灰石共生并以造岩矿物出现，挥发分F、P以及Ca、Mg等成分因素决定氟磷镁石的出现与否、温压条件控制氟磷镁石的多型变化。

However, magnesium alloyshave poor formability and limited ductility at room temperature ascribed totheir hexagonal close-packed crystal structure.

目前热处理细化晶粒成为提高镁合金塑性的一种有效手段，但是研究工作多集中在铸造态镁合金，关于挤压态镁合金型材的研究很少。

Our main products are magnesium wheels of automobile or autobike, magnesium steerings, magnesium fans, magnesium bonnets and brackets.

目前公司的主要产品包括镁合金卡丁车车轮、镁合金摩托车车轮、镁合金汽车车轮、镁合金方向盘、支架等汽车零部件，产品外销欧美等国家和地区。

The low rate (150 Mg kg/hm~2), the middle rate (300 Mg kg/hm~2) and the high rate (450 Mg kg/hm~2) were experimented to study the yield and qualities formation and growth of flue-cured tobacco under different magnesium fertilizer application.

2005年在湖南常宁市大田栽培条件下，以云烟87为供试验烤烟材料，采用漂浮育苗移栽，进行3次重复的随机区组试验，研究了在低镁水平(150kg/hm~2)、中镁水平(300kg/hm~2)和高镁水平(150kg/hm~2)三种不同施镁水平下，烤烟的生长发育、烤烟光合强度、蒸腾强度、烟株Mg~(2+)及干物质积累动态、产量、烟叶品质、经济性状和经济效益等烤烟生长发育的生理化学指标。

Microscopic characteristics of cladded crystal fiber are analyzed by X-ray diffraction, Laue X-ray diffraction and scanning electron microscopy, it is found that magnesium-ion indiffusion does not affect the single crystal structure and the domain structure of the magnesium diffused crystal fiber. It is found for the first time that MgO-rich layer in the magnesium diffused LiNbO〓 surface layer exhibits the crystal structure of an unknown compound from the Li-Mg-Nb-O ternary system and MgNb〓O〓. It is proposed for the first time that this unknown compound and MgNb〓O〓 in MgO-rich layer are the real sources of magnesium-ion indiffusion LiNbO〓. Their appearance indicate that MgNb〓O〓 is in the surface layer of MgO-rich layer, the unknown compound is in the subsurface layer and beneath where the MgNb〓O〓 is located, and these compounds have obviously preferred orientation.

通过镁离子内扩散法，首次在国内实现了具有阶跃和抛物折射率分布的c轴LiNbO〓单晶光纤和a轴Nd：MgO：LiNbO〓单晶光纤的芯—包层波导结构，为我国在该项目的研究填补了空白；建立了晶纤损耗的测量系统，提出了利用单模石英光纤作为晶纤入射光耦合器的思想；通过对晶纤损耗的测量，得到了包层晶纤比未包层晶纤损耗降低约14倍的好结果，并实现了低次模传输：对经镁离子内扩散实现包层后的晶纤的微观特性，利用X射线衍射，劳厄照相和扫描电镜表征发现，晶纤并不因镁离子的内扩散而影响其单晶结构和镁的扩散层畴的变化。

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。