查询词典 alumina

Using high alumina mullite as rawmaterial, cement or micro-powder as binding agents, the Hi-Al2O3 castables is one unshaped refractory and has the benefits of high strength,especially under medium temperature, and good thermal shock resistance.

高铝浇注料是以高铝莫来石原料为主，以水泥或微粉为结合剂的不定型产品，具有强度高，特别是中温强度高，热震性好的特点。

Theoretical analysis on three series of cements, i. e. Portland cement, high alumina cement and sulpho-aluminous cement, shows that alkalinity of the pore fluid of the balanced hydration product of sulpho-aluminous cement is the lowest, and its strength and alkalinity can be adjusted further by the adjustment of its components.

目前硅酸盐水泥、铝酸盐水泥、硫铝酸盐水泥等三大系列水泥的理论分析表明：硫铝酸盐水泥系列水化产物平衡时的液相碱度是最低的，且经过改性还可以进一步改善其强度和碱度等综合性能。

Watering concrete curing time, the introduction of Portland cement, ordinary portland cement or slag cement concrete mixing shall not be less than 7d; retardation of mixed type with admixtures, the impermeability requirements, or ash cement, fly ash cement concrete mixing shall be not less than 14d; of mixing using alumina cement concrete not less than 3d.

混凝土的浇水养护时间，对采用硅酸盐水泥、普通硅酸盐水泥或矿渣硅酸盐水泥拌制的混凝土不得少于7d；对掺用缓凝型外加剂、有抗渗性要求、或用火山灰水泥、粉煤灰水泥拌制的混凝土不得少于14d；对采用矾土水泥拌制的混凝土不少于3d。

Using grog,haydite as aggregate,high alumina cement as binder,and using compound early strength agent,the high strength haydite castable material produced successfully.

以焦宝石、陶粒为骨料，高铝水泥作结合剂及采用复合早强剂，研制成功高强陶粒浇注料。

ABSTRACT Chemical corrosion mechanism of concrete in Qinghai salt lake is briefly reviewed, and bittern resisting behavior of high alumina cement concrete, magnesium oxychloride cement concrete, alkali-activated slag concrete, ferrialuminate cement concrete and polymer impregnated concrete are also reported in the paper.

摘 要 简述了普通水泥混凝土在盐湖环境中的受腐蚀机理﹔报道了高铝水泥、氯氧镁水泥、铁铝酸盐水泥、碱矿渣和聚合物浸渍混凝土的抗盐卤腐蚀行为﹔对硅灰高密实混凝土的抗盐卤腐蚀机理进行了详细讨论，认为改善孔结构是获取混凝土高抗腐蚀性的有效途径。

Polymer-concrete ; emulsive resin ; alumina cement ; epoxy resin

聚合物混凝土；乳化树脂；钒土水泥；环氧树脂

The following are the main export goods we are dealing: antimony oxide.copper,scrap steel.pig iron,products made of tungsten,metal zinc,ferro alloy rare earth,coke,alumina,tin ingots,cement,fluorspar lump,magnesium oxide light and dense,talc lumps,barite,aluminium(processing with incoming materials and re-exporting),gypsum,iron nails,iron wire,calcium carbide,sodium sulphate anhydrous,ferrousmetals,nonferrousmetals,nonmetals,machines,apparatus and instrument,industrial and agricultural tools etc.we are also agent for importing and exporting the above products.

经营范围：我公司经营的主要出口商品有：锑、氧化锑、铜材、废钢、生铁、钨制品、锌、铁合金、稀土、焦碳、矾土、锡锭、水泥、砩石块、轻烧镁、滑石块、重晶石块、铝材、石膏块、铁钉、铁丝、电石、元明粉、黑色金属、有色金属、非金属矿产品、机械设备、仪器仪表、工农具等，并代理上述商品的进出口业务。

High quality ceramic mounted stone with handle, diamond plated products, emery abrasive cream, alumina fiber sharpening stone, spring rubber polishing mounted stone, precision spring rubber polishing mounted stone, precision wool polishing mounted stone, high qualiy precision polishing cream.

中国·浙江省台州长市一砂磨具厂 China Zhejiang Taizhou Yisha Grind Factory 8D50 高档陶瓷带柄砂轮磨头、金刚石电镀制品、金刚石研磨膏、氧化铝纤维油石、弹性海绵抛光磨头、弹性精密橡胶抛光磨头、高精羊毛抛光磨头、高精抛光膏。

Taking the andalusitc imported from South Africa and alumina fiber Produced by Luoyang Institute of Refractory Research as raw materials, and adding polyvinyl and aluminum sulphate as binder respectively, through dispersion, degassing,compression molding process and sintering at several elevated temperatures, samples of the composites with different contents of fibor were made.

采用进口南非红柱石和洛阳耐火材料研究院生产的氧化铝纤维为原料，分别用聚乙烯醇和硫酸铝作为结合剂，经过分散、真空脱气、压力成型及在不同的温度下高温烧结制得氧化铝纤维-红柱石复合材料。

Environment barrier coatings ; citric acid sol–gel method ; barium oxide–alumina–silicon oxide coating ; water vapor corrosion

环境隔离涂层；柠檬酸溶胶–凝胶法；氧化钡–氧化铝–氧化硅涂层；水氧腐蚀性能

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。