查询词典 alumina

New technologies of aluminium extraction from wide known kaolin rocks, high-alumina schists, anorthosites and some other non-bauxite raw materials have been elaborated in the Amur Scientific Centre FEB RAS.

在阿穆尔河科技研发中心，精心开发出了铝提取新技术，可以从广为人知的高岭土岩石、高氧化铝片岩、粒状火成岩和其它非氧化铝矿原材料中提取出铝。

Spinel is a compound of magnesia and alumina(Al2O3) and is thus a magnesium aluminate(MgAl2O4), found as accessories in igneous rocks, in metamorphosed aluminous schists, in contact metamorphosed limestones and sometimes in high temperature iore veins.

尖晶石主要成分是氧化镁和氧化铝，结晶习性是等轴晶系漂亮的正八面体。镁被铁置换就是铁尖晶石，被锌置换就是锌尖晶石，铁完全置换镁形成磁铁矿，铬置换铁尖晶石形成铬铁矿，这些类质同相的等轴晶系都是八面体结晶的尖晶石族矿物。

White fused aluminium, oxide is electrically fused in the furnace with high-grade alumina powder as row materials.It has higher hardness and sightly lower toughness than brown fused aluminium oxide,character-rized by its high purity,strong grinding ability.

白刚玉是以铝矾土为原料，在电弧炉内高温冶炼而成，它具有颜絮白，硬度高，韧必稍低，纯度高，自锐性优，磨削力强，效率高，耐酸碱腐蚀，热稳定性高等特点，它不但是高级磨料磨具材料，且还是高级研磨，抛光材料等。

A key intermediate of 2-benzylphenol was synthesized from benzyl alcohol and phenol by Claisen rearrangement reaction in the presence of activated alumina and the analog of bifemelane with new structure was prepared by etherification,amination and acidification reaction of the intermediate.

以苯甲醇、苯酚为起始原料，在催化剂活性Al2O3存在下，通过克莱森重排反应得到关键中间体2-苄基苯酚，再经过醚化、胺化和酸化反应得到新型结构的二苯美仑类化合物。

Shenzhen City Jin-fat Copper Co., Ltd. is a Shenzhen, Dongguan's largest suppliers of raw materials, one of copper and aluminum, operates mainly in China-made high-quality aluminum alloy, copper alloy (tungsten copper, beryllium copper, chromium copper, phosphor bronze, aluminum bronze , tin bronze in dozens of varieties), the United States Aluminum Company original imported alloy aluminum sheet, aluminum rod, and profiles (7075,6061,5052,2024 various grades and status), Alcan anodic alumina imports a wide range of industrial raw materials, etc., are widely used in aerospace, shipbuilding, mechanical equipment, mold manufacturing, electrical and electronic, hardware products, handicrafts and other industries.

深圳市锦发铜铝有限公司是深圳、东莞地区规模最大的铜铝原材料供应商之一，主要经营国产优质合金铝材、合金铜材（钨铜、铍铜、铬铜、磷青铜、铝青铜、锡青铜等数十个品种），美国铝业公司原厂进口合金铝板、铝棒及型材（7075、6061、5052、2024等多种牌号及状态）、加拿大铝业公司进口阳极氧化铝板等多种工业原材料，广泛应用于航空航天、船舶制造、机械设备、模具制造、电子电气、五金制品、工艺品等各行业。

To alumina material, as cast technology from a variety of thickness and size of the plate-shaped ceramic substrate, ozone happen tablets.

以氧化铝为材质，经流延工艺而成的各种厚薄尺寸的板形陶瓷基片、臭氧发生片。3。

This paper address the preliminary knowledge about sateflow and the modeling method about safety interlocking loop base on sateflow and farther expatiate it with a example of prewarming burner of alumina hydrate furnace.

本文介绍了Stateflow的基础知识以及基于Stateflow的安全联锁回路仿真建模方法，并以氢氧化铝焙烧炉预热燃烧器作为具体实例进一步阐述。

Most kinds of the raw materials for making porcelain, such as clay, feldspar, alumina, quartz and so on have been processed in the raw materials factories.

针对现在我国陶瓷工业中所用的粘土类、长石类、矾土类、石英类等原料多已在原料厂经过了加工处理，陶瓷的制浆则由原来的以研磨为主转变成了以混合与研磨为主的状况，本文改进了篮式砂磨机的结构，设计出了内循环高效研磨机。

A series of alumina-supported nickel molybdenum nitrides were prepared by temperature programmed reduction successfully.

采用程序升温还原法制备氧化铝载体负载的氮化镍钼。

By modifying and optimizing the procedures, which were well-described and understood for the synthesis of mesoporous silica, mesoporous alumina based molecular sieve has been successfully prepared.

通过对介孔氧化硅合成工艺的优化与修正可以用来制备介孔氧化铝分子筛。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。