查询词典 aluminium family

It was found that increasing pressure for blank can improve the compactedness of blanks so as to make foam aluminium materials with homogeneous pores. Foaming temperature, as one of the main influencing factors on foaming process, should be controlled higher than the melting point of Al or Alalloy to a certain extant in order to keep a reasonable viscosity. Thus, the foam aluminum with homogeneous pores and high porosity is available. As shown by experiments, such materials should be made on conditions that they shall be protected with molten salt under 300?MPa pressure at 675～680?℃.

研究了粉末冶金法制备泡沫铝材料的方法讨论了发泡过程中的保护方式、制坯压力、发泡温度等参数对泡沫铝体积质量、孔隙率、孔结构的影响，并对发泡机理进行了探讨增大制坯压力使得金属坯致密，可以得到孔结构均匀的泡沫铝材料；发泡温度是影响发泡的主要因素之一，发泡温度控制在高于铝或铝合金熔点，同时保持熔体具有一定粘度的范围内，能够得到孔结构均匀、高孔隙率的泡沫铝材料实验结果表明：采用熔盐保护方式，在300MPa的压力下，温度在675～680℃时，可得到孔径均匀、孔隙率高的泡沫铝材料。

Aim To explore the protective effects of total coptis alkaloids on the neurodegeneration caused by aluminium overload in mice.

目的 采用铝负荷致小鼠脑损伤模型，探讨黄连总生物碱对铝致神经元退行性变的防治作用。

Made from high-grade 4mm thick aluminium, this chassis plate features countersunk screw holes along the bottom to ensure that no screws come in contact with the ground.

从高品位的4毫米厚的铝，这机箱钢板的特点countersunk螺杆孔沿底部，以确保没有螺丝来与地面接触。

The crystallitic carbon was prepared from anthracite by demineralization and carbonization,then the magnesium/carbon nanocomposites for hydrogen storage were manufactured through reaction milling of the mixture of magnesium,crystallitic carbon and aluminium under hydrogen atmosphere.

将无烟煤进行脱灰和碳化，制备微晶碳，再将微晶碳和铝添加到镁中，用氢气反应球磨法制取镁/碳纳米复合储氢材料。用透射电子显微镜、选区电子衍射、X射线衍射和差示扫描量热分析对储氢材料的粒度、晶体结构和放氢温度进行了测定。

This thesis studies the volcanic tectono-petrofacies, petrology, mineralogy, geochemistry, isotopic chronology, stratum and high-precision SHRIMP zircon U-Pb datings of the Mt.Yandangshan volcano-intrusive complex, and concludes that: Yandangshan volcanic rock units belong to high-K calc-alkaline acid rock associations, mainly ryholitic and trachytic dacitic in composition. They have A/CNK values of 0.9-1.2 (i.e., aluminium saturation and supersaturation), enriched LREE and LILEs and depleted HFSE. Their 8Eu values are 0.11-0.32, indicating a evident fractional evolution of plagioclase crystallization. Their ∑REE varied very limitedly,(87~Sr/(86)Sri ratios and eNd values are 0.7086～0.7095 and -10.20～-9.96 for volcanic rocks, and 0.7087~0.7095 and -7.6～6.92 for the central intrusive facies syenite, which means that all the igneous rocks from Mt. Yandangshan are evolutional products of magmas with the same source, and that they derived mainly from crust, but mixed with mantle components.

本文从火山构造岩相学、岩石学、矿物学、地球化学、同位素年代学、地层学等方面出发，同时结合高精度SHRIMP锆石U-Pb定年，对雁荡山火山岩进行了系统的研究，确定雁荡山火山岩为一套以流纹质和粗面英安质为主体的高钾钙碱性酸性岩石组合，A/CNK值集中在0.9～1.2之间，为铝饱和或铝过饱和类型；富轻稀土元素和大阳离子亲石元素、相对亏损高场强元素：负铕异常明显，δEu值为0.11～0.32，表明岩浆经历了以斜长石为主的强烈结晶分异作用：岩石样品的∑REE变化有限，火山岩样品的~(87Sr/~(86)Sr_i为0.7086～0.7095，εNd为-10.20～-9.96，中央侵入体石英正长岩~(87Sr/~(86)Sr_i为0.7087～0.7095，εNd为-7.6～-6.92，表明它们是同源岩浆分异演化的产物，物质来源主要为陆壳，但有地幔物质参与。

Dutta said EDAL would invest Rs 115 crore in a state-of-the-art unit in Daman for manufacturing aluminium foil-based packaging products.

Dutta称，EDAL将在Daman投资11.5亿卢比建立一高技术生产体系，该体系主要生产铝箔级包装产品。

Ceiling: Some buildings like Distribution computer operating room may have higher demand, they can use light steel dragon bone cotton board ceiling, while damply room may use aluminium board ceiling

吊顶：要求较高的建筑如配电计算机操作室等采用轻钢龙骨矿棉板吊顶，潮湿房间为铝扣板吊顶。

For more upgrade aluminium oxide yield, optimize indices, energy conservation and save cost, it is necessity to desilicify steps reconstruction.In order to overcome the shortcoming of the desilication used in Shangdong Alumina Corpotation,three technology such as indirect heating, continious desilication,deep desilication by separation of the sodium-silicon residue.

本文通过对理论界关于烧结法生产氧化铝脱硅原理的研究，结合国内主要氧化铝生产厂家脱硅实践方面的经验，针对山东铝业公司烧结法氧化铝生产脱硅工序的现状，运用间接加热连续脱硅、钠硅渣分离深度脱硅和HCAC法高效脱硅三项科研成果，对原有的三次脱硅工艺改为二次脱硅工艺。

Combination reaction of the sodium aluminate solution produced by upstream desiliconization process, and aluminium hydroxide with certain quality index is produced, at the same time qualified mother solution is supplied in the ACCDP.

末槽分解率是反映碳分过程工况的重要工艺指标，但是分解率不能在线检测，只能通过离线化验，形成大滞后、非线性特性，严重影响碳分过程的优化运行。

The results showed that VA mycorrhizal fungi and dicalcium phosphate, octocalcium phosphate, iron phosphate, aluminium phosphate promoted growth and increased phosphorus content of corn plant.

结果表明：VA菌根真菌和磷酸二钙、磷酸八钙、磷酸铁和磷酸铝均促进了玉米植株生长，增加了植株含磷率和吸磷总量。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？