镁

Magnesia alumina spinel brick is based on high-purity magnesia and synthetic magnesia alumina spinel with major crystal phase of periclase and spinel. By intensively mixed, double-face pressed and fired at high temperature. Being completely chrome free, it is the ideal refractory for the transitional zone of cement kiln characterized by superior thermal shock resistance, good anti-erosion capacity, and lower thermal conductivity.

此次展会为您展出的水泥回转窑用镁铝尖晶石砖以高纯镁砂和合成镁铝尖晶石砂为主要原料，主晶相为方镁石和尖晶石，经过强力混练，双面加压，高温烧成等工艺制成，是水泥窑过渡带的标准耐火材料，具有无铬污染，热震稳定性好，耐磨损，抗侵蚀性强，热导率低等特点。

Additionally, Pb-pheophytin was non-fluorescent and could result in the fluorescence intensity quenching of pheophytin.

通过光度动力学测定，分别求得铅与脱镁叶绿素a、脱镁叶绿素b和13〓-羟基脱镁叶绿素a的反应速率常数为2.0、0.78和1.86mol〓 ls〓。

The multivariate linear regression analysis on specific absorption coefficients for pheophytin and chlorophyll a indicates that the specific absorption coefficients for pheophytin was much larger than chlorophyll a at 412 nm; slightly larger than pheophytin at 440nm; and about 3 times larger than pheophytin at 670 nm and 675 nm.

结果表明，412nm波段脱镁叶绿素的比吸收系数远大于叶绿素a；440nm波段，叶绿素a的比吸收系数略大于脱镁叶绿素；670、675nm波段，叶绿素a的比吸收系数约为脱镁叶绿素的3倍。

Because the atomic affinity energy of Ca-O and Be-O is lower than Mg-O,The Ca and Be aggregating on the surface of liquid Mg will priorly combined with O,forming compact oxides of Ca,Be and alloys of elements,which prevent Mg alloys from burning.

由于Ca，Be与氧的原子亲和能低于镁与氧的亲和能，聚集在液体表面的Ca，Be将优先与氧结合，生成致密的镁与合金元素的混合氧化物，阻止镁合金燃烧。

Because of that improving social and economic efficienies, rise addi value of Mg metal productor and further expand reproduction. It is proposde a new production line of alloy Mg...

为进一步扩大再生产，拓宽市场领域，拟扩大金属镁生产和新建镁合金生产线，以实现规模效益和提高金属镁产品附加值。

The results indicated that with solution time increasing,Mg_(17)Al_(12) phase was dissolved into the Mg matrix and Al_2Ca phase became thinner and shorter,then gradually broken and began to spheroidize;with aging time increasing,Mg_(17)Al_(12) phase was precipitated from the Mg matrix as the form of small particles and Al_2Ca phase was stable and its shape and quantity change...

随着时效时间的增加，Mg17Al12相以细粒状从过饱和的镁基体中析出；而Al2Ca相比较稳定，其数量和形状变化极小。固溶处理后，合金硬度和拉伸强度有所下降；时效处理后，合金硬度增加到峰值后下降，拉伸强度略有升高。固溶、时效处理后轧制AM50和AM50+1Ca镁合金的塑性有所增加；而轧制AM50+2Ca镁合金固溶后塑性有所增加，时效后塑性有所下降。

The chlorin e6 7 and chiorin 11 were oxidized further with osmium oxide in the same oxidization condition to yield bateriochlorin 8 and 12, respectively.

卟吩醛2在碱性条件下转化为卟吩e6三甲酯7，2与烷基溴化镁的格氏反应给出脱镁叶绿酸醇9，选择高钌酸四丙基铵和N-甲基吗啉N-氧化物将3-位羟基氧化成羰基，所生成的卟吩二酮10在酸性条件下脱去甲酸甲酯生成焦脱镁叶绿酸衍生物11，用四氧化锇对7和11实施氧化，则分别转化为细菌卟吩衍生物8和12。

Microstructure and Properties of Magnesium Alloy Scrap s Before and After Purification Treatment by Degassing

镁合金以其优越的性能正在得到广泛的应用，而镁合金废料的回用已成为镁工业可持续发展的关键环节。

In this article,the effects of rare earth during the process of magnesium and magnesium alloys melting,including eliminating hydrogen、deoxygenating oxides e and preventing ignition are introduced,the influence and the correlative mechanisms of rare earth in refining the microstructures of magnesium,improving its mechanical properties at elevated temperature and corrosion resistance are also review...

本文主要综述了稀土元素在镁及镁合金熔炼过程中除氢、减少氧化夹杂、阻燃的应用，以及稀土元素对镁合金微观组织结构的细化、高温力学性能的改善和耐蚀性能提高等方面的作用和机理。

Taking the practice that uses liquating method to recycle magnesium alloy waste so as to produce AZ91 alloy for example, the work is done to compare the environmental impact of both primary magnesium alloy and recycled magnesium alloy.

以熔解法回收镁合金废料生产AZ91合金为例，比较了原生镁合金和再生镁合金的环境影响。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。