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copper     
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    A Study of Kinetics to Extract Copper by a Mixed System of Extractants of Hydroxyoxime Kinds—Osmotic Agent T
    羟肟类萃取剂—渗透剂T萃动力学研究
短句来源
    RECOVERY OF Cu FROM ACIDIC COPPER RINSE WATER
    槽边循环电解法从酸性镀废水中回收
短句来源
    Oxidation Kinetics of Floated Copper Concentrate in Fluidized Bed
    磨浮精矿流化床氧化动力学
短句来源
    A Study on the Electrodeposition of Hard Copper Coating from Acidic Bath
    酸性电沉积硬层研究
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    Technology for Colouring Articles of Copper and Its Alloys
    及其合金氧化着色工艺
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  紫铜
    Purple Copper Glaze
    紫铜
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    The corrosion inhibition effect of 2-undecyl-1-(bisthioureido)ethyl-imidazoline(SM-2)for copper alloy tube(70-1)in hydrochloric acid and the film formation Properties of SM-2 on cop-per and brass tube surface are studied.
    研究了2-十一-烷基-1-(双硫脲)乙基咪唑啉(简称SM-2)在盐酸介质中对70-1铜的缓蚀作用及其在黄铜和紫铜管表面上的成膜性能。
短句来源
    The electroplating technology parameters and test results of coherence force of Cu plating steel wire with rubber are given. Matters needing attention in production are pointed out. The coherence forces of rubber to electroplating bronze wire and that to electroplating copper wire are compared.
    对电镀低锡青铜回火胎圈钢丝生产工艺进行研究 ,给出了电镀工艺参数和镀铜钢丝与橡胶粘合力的试验结果 ,指出生产中的注意事项 ,对镀青铜钢丝与橡胶的粘合力和镀紫铜钢丝与橡胶的粘合力进行比较 ,结果显示 1.0mm电镀青铜钢丝的粘合力最低为 830N ,最高达 12 30N ,平均比电镀紫铜钢丝的粘合力高 11%~ 16 %
短句来源
    Three techniques of color plating, thermoxidation, chemical soakage and chemical dyeing are adopted, the Ni-P alloy decorated with a series of colors of copper, yellow, blue, green, black are obtained.
    采用热氧化着色法、化学浸渍法、化学染色法3种处理工艺对化学镀Ni—P合金试件进行了着色处理,获得了具有紫铜色、黄色、蓝色、绿色、黑色等色彩的Ni—P合金装饰镀层。
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    Results prove that the obsuruction coefficient of red copper tube's and stainless steel tube's supperficies are 0.80~1.32 and 0.60~1.14,which are lower than that of cabon steel's superficies in the range of Re of the experiment.
    结果证明紫铜和不锈钢表面的阻力系数比碳钢表面在实验雷诺数Re范围内分别低0.80~1.32和0.60~1.14。
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  铜离子
    Separating Copper Ion in Aqueous Solution by Foam fractionation Method
    泡沫法分离溶液中铜离子
短句来源
    A NEW RARE-EARTH-ELECTRODE MATERIAL(LaB_6)FOR FABRICATION OF ALL SOLID-STATE COPPER ION SENSOR
    一种制备铜离子传感器的新稀土电极材料LaB_6
短句来源
    The Multi - coordination Exchange Reaction of The Interaction Between Copper Ion andδMnO_2
    铜离子在δMnO_2上多级交换反应过程研究
短句来源
    The Influences of B2O3-Na2O-CuO Glass Composition on the Amount of Released Copper Ions
    B_2O_3-Na_2O-CuO玻璃的化学组成对铜离子释放量的影响
短句来源
    METHANE AROMATIZATION UNDER NON OXIDATIVE CONDITION OVER ZEOLITE CATALYSTS EXCHANGED WITH COPPER ION
    铜离子交换改性沸石催化剂上甲烷的非氧芳构化
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  金属铜
    STUDY OF COPPER REDUCTION ——POTASSIUM DICHROMATE TITRATION MEASURING TOTAL IRON
    金属铜还原-重铬酸钾滴定法测定总铁的研究
短句来源
    Fractal study on copper electrodeposition
    金属铜电沉积过程中分形研究
短句来源
    The Experiment Argument of the Metals Copper Color
    金属铜颜色的实验论证
短句来源
    Study On Photophysical Properties Of Two Copper(Ⅰ)-Halogen Clusters Under High Pressure
    高压下两个金属铜(Ⅰ)簇化合物的光物理研究
    The tetradentate Copper(Ⅱ) schiff base complex CuSAlen reacts with Euβ 3·2H 2O to yield new complexes of formula [Cu(SAlen)Euβ 3](SAlen=N,N′ ethylenebis(salicylaldimine),β=acetylacetone Acac,trifluoroacetyl acetone TFA).
    本文报道过渡金属铜与稀土铕的杂双核配合物Cu(SAlen)Euβ3(SAlen=N,N′-乙二胺双水杨醛席夫碱,β=乙酰丙酮,Acac;三氟乙酰丙酮,TFA)的合成。
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      copper
    The copper complexes of the above ligands were used in catalytic asymmetrical Henry reactions.
          
    Comparison of antibacterial ability of copper and stainless steel
          
    In this paper, the electro-analysis and spectrophotometric analysis methods were used to study the antibacterial ability of copper and stainless steel materials.
          
    coli) and photo-bacteria were used as samples, the antibacterial effect of stainless steel was very weak, while the percentage of bacteria dying from exposure to metallic copper for 30 min was over 90%.
          
    The antibacterial ability of copper has a potential application in the field of disinfection, food packaging and piping of drinking water.
          
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    An experimental investigation was made of temperature gradients in air streams being cooled while flowing through a cylinder of diameter 81 mm packed with high thermal conductivity (iron and copper) and low thermal conductivity solids of spheres, cylinders and Raschig rings. From the measured temperature gradients at various bed depths and radial posi-tions, and for the different particle sizes and flow rates, the effective thermal conductivity Ke, and the heat transfer coefficient of the wall hw, were...

    An experimental investigation was made of temperature gradients in air streams being cooled while flowing through a cylinder of diameter 81 mm packed with high thermal conductivity (iron and copper) and low thermal conductivity solids of spheres, cylinders and Raschig rings. From the measured temperature gradients at various bed depths and radial posi-tions, and for the different particle sizes and flow rates, the effective thermal conductivity Ke, and the heat transfer coefficient of the wall hw, were determined by the integral, graphical and the direct-current electric analog methods.

    作者用低导热系数(包括玻璃、磁)的球体、圆柱体、环柱体与高导热系数(包括铜、铁的球体,圆柱体为填充物,以空气为传热介质,使其在管径为81毫米之填充床层内冷却,改变流体流量,床层高度及填充物大小,通过试验测出在不同的条件下床层的径向温度分布,并应用积分法、直流电模拟计算法及图解法求得床层的有效导热系数及管壁薄膜传热系数.在试验范围:低导热系数填充物D_P/D_t自0.074—0.254;高导热系数填充物D_p/D_t自0.12—0.2,L/D_t自5—15,Re汇数自130—1400,即直线速度自0.5—1.6公尺/分,若以床层进出口平均温度之数学平均值为定性温度,则床层之有效导热系数及管壁薄膜传热系数可分别归纳于下式:低导热系数填充物:K_e=0.182(D_t/D_p)~(0.45)Re~(0.75),h_w=65e~(-4)(D_p/D_t)(K/D_t)((D_t/L))~(0.2)Re~(0.4)高导热系数填充物:K_e=0.3k(D_t/D_p)~(0.6)Re~(0.72),h_w=5.1(K/D_t)(D_t/D_p)~(0.8)(D_t/L)~(0.1)Re~(0.46)填充物形状对K_e及h...

    作者用低导热系数(包括玻璃、磁)的球体、圆柱体、环柱体与高导热系数(包括铜、铁的球体,圆柱体为填充物,以空气为传热介质,使其在管径为81毫米之填充床层内冷却,改变流体流量,床层高度及填充物大小,通过试验测出在不同的条件下床层的径向温度分布,并应用积分法、直流电模拟计算法及图解法求得床层的有效导热系数及管壁薄膜传热系数.在试验范围:低导热系数填充物D_P/D_t自0.074—0.254;高导热系数填充物D_p/D_t自0.12—0.2,L/D_t自5—15,Re汇数自130—1400,即直线速度自0.5—1.6公尺/分,若以床层进出口平均温度之数学平均值为定性温度,则床层之有效导热系数及管壁薄膜传热系数可分别归纳于下式:低导热系数填充物:K_e=0.182(D_t/D_p)~(0.45)Re~(0.75),h_w=65e~(-4)(D_p/D_t)(K/D_t)((D_t/L))~(0.2)Re~(0.4)高导热系数填充物:K_e=0.3k(D_t/D_p)~(0.6)Re~(0.72),h_w=5.1(K/D_t)(D_t/D_p)~(0.8)(D_t/L)~(0.1)Re~(0.46)填充物形状对K_e及h_w的影响,仅需将D_p用 D’_p代替,同时把K_e式中之常数0182及03各改为0.22及0.38即可.直流电模拟计算法系利用电压表示温度,电阻表示传热阻力,电流表示热的流动,是简单的模拟计算机的一种,它在近代工程上的应用日渐广泛,有了传热数据应用它来求床层的温度分布异常方便.

    The relation between the Stability of β-C_2S and. the burning temperature has been inveatigated by means of X-ray,polorized microscope and TDA.The experimental results show that β-C_2 is a metastable modification, which tends to invert into γ-C_2S during cooling. From the samples burned in different temperatures varying from 950℃ to 1400℃, the relative content of γ-C_2S increases with lowering temperature. Dusting occurs even from samples burned at temperature of 1200℃ for 6 hours, but there is no dusting occured...

    The relation between the Stability of β-C_2S and. the burning temperature has been inveatigated by means of X-ray,polorized microscope and TDA.The experimental results show that β-C_2 is a metastable modification, which tends to invert into γ-C_2S during cooling. From the samples burned in different temperatures varying from 950℃ to 1400℃, the relative content of γ-C_2S increases with lowering temperature. Dusting occurs even from samples burned at temperature of 1200℃ for 6 hours, but there is no dusting occured when the samples are burned twice at the same temperature with tempering only 5 hours in total,yet,the final product is always the mixture of β-C_2S and γ-C_2S.The afore-mentioned results apparently are different from the views of Yannaquis, who confirmed that: "β-C_2S obtained from burning temperatures between 950℃ and 1200℃ was stable at any temperature even under slow cooling."Depending on the characteristics of metastable β-C_2S, we use K_2O, Na_2O, MgO, Fe_2O_3,copper-slag and fluorspar as stabilizers to prevent the dusting from portland cement clinker.The experimental data thus obtained are believed of value to the practical control of raw mix at cement factories.

    本文采用了X—射线分析、差热分析和显微镜观察,研究了β—C_2S的稳定性与烧成温度的关系。试验结果指出:β—C_2S是介稳的晶型,在冷却过程中要转换为γ—C_2S。从950℃~1400℃之间不同烧成温度的试样得知,烧成温度愈低,γ—C_2S的相对含量愈高。如果在1200℃经过两次煅烧,并经两次保温共达5小时,就能防止粉化现象。然而最终的产物为β-和γ—C_2S的混合物。据本试验结果,对Yannaquis所提出的“在950°~1200℃烧成的β—C_2S,在任何温度下都是稳定的晶型,甚至慢冷也是稳定的。”这一观点提出不同看法。 根据β—C_2S介稳定性的特征,试验了K_2O、Na_2O、MgO、Fe_2O_3、铜矿渣及螢石对防止普通水泥熟料粉化的作用,这对在生产实际中控制配科参数有一定的参考价值。

    On the basis of the analysis of the previous paper, the present work poses a series of problems in dilute-phase heat transfer technique as applied to chemical metallurgy, and illustrates its practical aspects through pilot-scale measurements and experiments in the development of new metallurgical processes.In actual practice, particles are more often than not in accelerative motion while heat is being transported between them and the surrounding fluid medium, with the result that the transfer coefficient seldom...

    On the basis of the analysis of the previous paper, the present work poses a series of problems in dilute-phase heat transfer technique as applied to chemical metallurgy, and illustrates its practical aspects through pilot-scale measurements and experiments in the development of new metallurgical processes.In actual practice, particles are more often than not in accelerative motion while heat is being transported between them and the surrounding fluid medium, with the result that the transfer coefficient seldom retains a constant value. An acceleration integral∫F(x)=integral from n=Re_0 to (Re_0+Re)((Re_s~xdRe_s)/(Ar_(Δρ)-fRe_s~2)) is proposed from which four dimensionless groups are derived (Eqs. (28), (29), (31), and (36)) which permit comparison of analogous heat transfer equipment on a generalized basis. Towards this end, Eq. (43) is derived for calculating the effectiveness of heat recovery for multi-layer dense-phase fluidization with full allowance for heterogeneous nonuniformity, so that the dense-phase operation may be compared directly with the corresponding dilute-phase operation as given by Eqs. (26) and (26a).After heat transfer measurements had been conducted on pilot scale, the authors applied the dilute-phase technique to heat transfer problems in the magnetizing roasting of low-grade iron ores and the sulfatizing roasting of an iron ore containing small amounts of copper and cobalt. In both cases pilot plant results indicate that the capital investment of dilute-phase equipment would be much lower that those of the conventional counterparts of corresponding capacities. Finally, it is concluded that dilute-phase technique is a new, yet rapidly developing field in the application of fluidization to chemical metallurgy, and a few important problems are proposed for future investigation.

    在前文的分析基础上,提出了将稀相技术应用于流态化冶金中換热过程时的一系列問題,并通过稀相換热的扩大实驗和中間工厂实践进一步闡明稀相流态化的应用。在工艺換热过程中顆粒在加速度状态下与周围的流体进行換热,因此換热系数并非为常数。本文通过一个加速度积分∫F(x)=integral from n=Re_0 to (Re_0+Re)((Re_s~xdRe_s)/(Ar_(Δρ)-fRe_s~2)),对換热設备的換热能力和压降特性用四个无因次数加以統一描述[式(28),(29),(31)和式(36)]。将稀相換热与多层浓相流态化床比較时,本文为流速的非齐次性提出式(43)所表示的多层流态化床的热量回收率关系,使之可与稀相換热[式(26)和式(26a)进行直接比較]。在进行稀相換热扩大实驗后,将稀相技术应用于貧铁矿的磁化焙烧和含低品位銅鈷氧化鉄矿的硫酸化焙烧中間工厂中,并指出采用稀相換热的設备投资仅为习俗設备的一个很小的百分数。指出稀相技术是一个流态化冶金中正在开始发展的領域,其中許多問題尚待进一步的探索和研究。

     
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