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The iron carbide constituent of steel and cast iron; very hard and brittle.

铁的碳化物，组成钢和铸铁，极硬极脆。

In the experiment of fluid bed, when the iron ore has been reduced for 120 minutes with the use of CO·CO〓·H〓 mixture containing 20%CO〓 at the temperature of 700℃, the reductivity and metallization can both exceed 90%, and the rate of iron carbide exceeds 73%.

流化床实验中，在温度700℃用含CO〓为20％的CO·CO〓·H〓混合气体还原铁矿石120分钟可获得还原度和金属化率大于90％的还原产品，碳化铁率超过73％。

At the same time, Ministry of Land and Resources of 2000 since the new expansion iron and steel, electrolytic aluminum and cement with limestone land enterprises to carry out an inspection of the iron alloy, calcium carbide industries such as the supply of land taken corresponding measures.

与此同时，国土资源部对2000年以来，新扩建钢铁，电解铝，水泥用灰岩土地的企业进行检查，铁合金，电石等行业土地供应采取了相应的措施。

In this paper, the recent research status on preparing iron carbide and the effects on formation of iron carbide are summarized elaborately, such as reacting temperature, reduction atmosphere, microstructure of raw material, gangue component, depositio...

本文对制备碳化铁的研究现状，以及反应温度、还原气氛、原料微观结构、原料脉石成分、碳沉积、含硫气体等因素对碳化铁生成反应的影响进行了详尽的文献综述。

With iron carbide, we have grown diamond layers on the surface of diamond and cBN seeds. The iron carbide not only nucleated and formed diamond crystal, but also grown diamond layers on different substrate under HPHT.

以铁碳化合物为原料在金刚石和立方氮化硼籽晶表面外延金刚石的实验表明，铁碳化合物不但可以在高温高压下成核形成金刚石颗粒，而且可以在同质或者异质基底上外延生长金刚石层。

The traditional technology of iron carbide production exists the problem that the reaction time is too long. The research of adding the additive into the ore of the fluid-bed was carried out in order to find the catalyst of this reaction. It was found out that K2CO3 and CaCl2 can be the catalysts of this reaction. The reacting time and equilibrium data in addition of K2CO3 and CaCl2 were examined and were campared with the contrastive experimental results respectively. The theoretical dynamics analysis also reveals that both K2CO3 and CaCl2 can accelerate the iron carbide forming reaction.

摘 要：传统的碳化铁生产工艺存在反应时间较长的难题，为此通过在流化床入炉矿石中配加部分添加剂的还原实验研究，以寻求该反应可能的催化剂，缩短反应时间，提高碳化铁生产效率和经济效益采用CaCl2和K2CO3作为反应的催化剂，利用反应所测数据，与对比实验相比较，并结合动力学分析，得出CaCl2和K2CO3可以加速碳化铁还原反应进行的结论。

In most cases, the medical profession do not advocate drug use of tea, in particular, ferrous sulfate, ferrous carbonate, iron citrate iron drink containing amine such as aluminum hydroxide of aluminum-containing agents, such as the western face of tea tea and more phenolic material and metal ion binding and precipitation, will be reduced or loss of efficacy.

在多数情况下，医学界不主张用茶水服药，尤其是硫酸亚铁、碳酸亚铁、枸橼酸铁胺等含铁剂喝氢氧化铝等含铝剂的西药，遇到茶汤中的茶多酚类物质与金属离子结合而沉淀，会降低或失去药效。

High purity iron oxide is prepared from the iron chloride waste liquid in the production of titanium dioxide and harmless discharge is tested.

对盐酸法生产钛白的含氯化亚铁废酸液制取高纯氧化铁产品和无害化排放应用进行了实验研究。

Linear sweep voltammetry and Tafel technology were employed to measure the polarization of iron electrode in sodium chloride solutions with different pH value and with different concentration of sodium chloride, so that to study the corrosion regulation of iron.

采用线性扫描伏安法和Tafel方法测定铁的极化曲线，研究了铁电极在不同pH值NaCl溶液中，以及在不同浓度NaCl溶液中腐蚀规律。

Copper plate was employed as substrate,ethanol as carbon source,and iron chloride or iron nitrate as catalyst precursor .

采用乙醇催化燃烧法制备竹节形碳纳米管，利用乙醇作为碳源和燃料提供材料生长所需的能量，以Cu薄片作为基底，FeCl3与Fe(NO3)3作为催化剂先体。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。