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铜铅     
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  copper lead
     A experimental research on separation of copper,lead and zinc from a kind of polymetallic ore was performed. The mineral processing flowsheet included copper-lead bulk flotation,separation of copper and lead from the bulk rough concentrates and beneficiating zinc from tailings,obtained mineral processing indexes are concentrate grades:Cu20.86%,Pb63.05% and Zn50.29% with recoveries Cu88.11%,Pb86.29% and Zn85.38% respectively.
     针对广东某铜、铅、锌多金属矿,采用铜铅混浮、混合粗精矿铜铅分离、尾矿选锌的工艺流程,可获得βCu20.86%、εCu88.11%、βPb63.05%、εPb86.29%、βZn50.29%、εZn85.38%的选矿技术指标,为该矿的开发利用提供了合理的工艺参数和工艺流程。
短句来源
     This article studied influence of three kinds of soil samples' quantity (0.1000,0.2500,0.5000 g) on test result of four heavy metal element copper, lead, nickel, and zinc) .
     本文探讨了土壤样品三种称样量(0.1000.0.2500,0.5000 g)对铜,铅,镍,锌四种元素测定结果的影响。
     Discussion on the Determination of Copper,Lead,Cadmium by Semi-differential Stripping with Glassy-Carbon Mercury Film Electrodes
     玻璃碳汞膜电极半微分阳极溶出法测定人发中铜铅镉的若干问题讨论
短句来源
     Study on the Simultaneous Determination of Copper, Lead, Cadmium and Zinc in Food by Means of Artificial Neural Network
     食品中铜铅镉锌同时测定的神经网络方法研究
短句来源
     ADSORPTIVE POLAROGRAPHIC WAVES OF COPPER,LEAD,CADMIUM AND ZINC-ETHYLENEDIAMINE-8-HYDROXYQUINOLINE COMPLEXES
     铜,铅,镉,锌-乙二胺-8-羟基喹啉络合物极谱吸附波
短句来源
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  cu pb
     Flame Atomic Absorption Spectrometric Determination of Cu, Pb and Zn in Water through Concentration on HCS-g-MMANHNH_2
     HCS-g-MMANHNH_2富集火焰原子吸收法测定水中铜铅
短句来源
     ICP-MS DETERMINATION OF As Cd Cu Pb and Zn IN CHRYSANTHENUM TEA
     ICP-MS法测定菊花茶中砷镉铜铅
短句来源
     THE SIMULTANEOUS DETERMINATION OF Cu, Pb, Cd, AND Cr IN WATER BY DERIVATIVE POLAROGRAPHIC WAVE
     水中铜铅镉铬导数极谱波的同时测定
短句来源
     EXPERIMENT STUDY OF NEW TECHNOLOGICAL PROCESS ON FLOTATIONOF INTRICATE Cu,Pb AND Zn SULPHIDE ORE
     复杂铜铅锌硫化矿浮选新工艺试验研究
短句来源
     Direct Determination of Cu, Pb and Zn in Wastewater by Atomic Absorption Process
     原子吸收直接测定铜选厂废水中的铜铅
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  copper-lead
     Tests on Separation of Copper-lead mixed Concentrate
     某难选铜铅混合精矿的分离试验研究
短句来源
     A experimental research on separation of copper,lead and zinc from a kind of polymetallic ore was performed. The mineral processing flowsheet included copper-lead bulk flotation,separation of copper and lead from the bulk rough concentrates and beneficiating zinc from tailings,obtained mineral processing indexes are concentrate grades:Cu20.86%,Pb63.05% and Zn50.29% with recoveries Cu88.11%,Pb86.29% and Zn85.38% respectively.
     针对广东某铜、铅、锌多金属矿,采用铜铅混浮、混合粗精矿铜铅分离、尾矿选锌的工艺流程,可获得βCu20.86%、εCu88.11%、βPb63.05%、εPb86.29%、βZn50.29%、εZn85.38%的选矿技术指标,为该矿的开发利用提供了合理的工艺参数和工艺流程。
短句来源
     Centrifugal Pouring for Copper-lead Alloy Bearing Shell
     铜铅轴瓦的离心浇注
短句来源
     Test Research on Copper-lead Separation
     铜铅分离试验研究
短句来源
     In the medium of 0~2 mol/L/ H_3PO_4,Lead can form a violet-red complex with DCS-arsenazo. The apparent molarabsorptivity is 2.3 × 10 ̄4 .Beer’s law is obeyed in the range of 0-20 μg Pb ̄2+/25 mL. Themethod has been used directly for the determination of lead in copper-lead allovs,
     本文研究了铅与DCS-偶氮胂显色反应,在0.2mol/L的H_3PO_4介质中,铅与DCS-偶氮胂可生成紫红色的络合物,其表现摩尔吸光系数为2.3×10 ̄4L·mol ̄-1“·cm ̄-1铅在0~20μg/25mL符合比耳定律,提出了直接光度法测定铜铅合金中铅的分析方法。
短句来源
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  copper and lead
     A experimental research on separation of copper,lead and zinc from a kind of polymetallic ore was performed. The mineral processing flowsheet included copper-lead bulk flotation,separation of copper and lead from the bulk rough concentrates and beneficiating zinc from tailings,obtained mineral processing indexes are concentrate grades:Cu20.86%,Pb63.05% and Zn50.29% with recoveries Cu88.11%,Pb86.29% and Zn85.38% respectively.
     针对广东某铜、铅、锌多金属矿,采用铜铅混浮、混合粗精矿铜铅分离、尾矿选锌的工艺流程,可获得βCu20.86%、εCu88.11%、βPb63.05%、εPb86.29%、βZn50.29%、εZn85.38%的选矿技术指标,为该矿的开发利用提供了合理的工艺参数和工艺流程。
短句来源
     Practice of Smelting Gold Containing Copper and Lead
     含铜铅金泥的冶炼实践
短句来源
     Test Study on Combined Depressants in Copper and Lead Separation Flotation
     组合抑制剂在铜铅分离浮选中的试验研究
短句来源
     Study on floatation separation of copper and lead with non-toxic inhibitor
     无毒抑制剂铜铅分离浮选的研究
短句来源
     CLINICAL SIGNIFICANCE OF SERUM ZINC,COPPER AND LEAD IN DIFFERENT RENIN HYPERTENSIONS
     不同肾素型高血压病血清锌铜铅测定及临床意义
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  copper lead
Electrodeposition of palladium on the copper lead frame: Electrode reaction characteristics and the effects of primary additives
      
In either case, the copper lead configuration has better thermal characteristics.
      
Nowadays, the main activity of the plant is production of free-copper lead and copper matte by roasting non-ferrous ores.
      
This surface is only used on copper lead frames with gull wing leaded devices and is an acceptable surface finish.
      
The LT1207's copper lead frame draws heat away from the amplifiers, maximizing power handling characteristics.
      
  cu pb
We use Al/Pb-, Cu/Pb- and Ag/Pb-double layers in these measurements, which are carried out at temperatures down to 0.3 K.
      
Zur Kontaktwirkung in supraleitenden Doppelschichten aus Cu/Pb
      
The related mineralization shifted simultaneously from Cu (Mo) to Cu-Mo (W) and eventually Fe(Cu)/Pb-Zn.
      
In solutions of lead a blue complex of the composition (Cu Pb) [BCO]2 was found to be the co-precipitated copper compound.
      
Da sie teilweise gut voneinander getrennt sind, k?nnen Bestimmungen dieser Metalle nebeneinander ausgeführt werden (Cu/Pb, Bi/Pb, Pb/Zn, Cu/Cd).
      
更多          
  copper-lead
Variography of ores from the Rubtsovsk massive-sulfide copper-lead-zinc deposit (Altai Territory)
      
Isotopic ratios of trace amounts of lead in pyrite and pyrrhotite have been successfully used to distinguish unmineralized Ordovician from mineralized Silurian black shales around the Woodlawn copper-lead-zinc prospect.
      
Al Amar Fault is a "copper-lead line" dividing a Pb-Ag subprovince (of sialic derivation?) from a Cu-Zn-Au sub-province (of plate margin/island arc derivation?).
      
Thermal analysis and kinetics of the copper-lead matte roasting process
      
In this paper, the results of copper-lead matte investigations are presented.
      
更多          
  copper and lead
Specific features of complex formation are considered with the reference to copper and lead.
      
The physicochemical properties of chelating polymer sorbents (CPSs), derivatives of poly(styrene-2-hydroxy-?1-azo-1'?-2'-hydroxybenzene), are studied with respect to copper and lead ions.
      
A GLIMPSE ON COPPER AND LEAD METALWORKING AT ALTYN-DEPE (TURKMENISTAN) IN THE 3rd MILLENNIUM BC
      
Internal friction in diamagnetic copper and lead polycrystals in a DC magnetic field
      
The amplitude-dependent internal friction of diamagnetic copper and lead polycrystals 99.9% pure has been studied experimentally in dc magnetic fields with an induction 0 ≤ B ≤ 0.75 T.
      
更多          
  其他


Rapid polaropraphy with the mercury film electrode was applied to the simultaneous determination of Cu2+, Pb2+, Cd2+ and Zn2+ in water. When these ions were electrolyzed in 0.15M NH4Gl medium for 10 min. at -1.3V (VS. Ag- Hg electrode), the metals were elcctrodeposited on a mercury film electrode, and an anodic dissolution curve was recorded by an X-Y functional recorder from -1.3V to -0.1V. The peak heights were linear with concentrations within the range or 10-6M-10-8M for Cu, Pb, Zn and of 10-6M-10-9M for...

Rapid polaropraphy with the mercury film electrode was applied to the simultaneous determination of Cu2+, Pb2+, Cd2+ and Zn2+ in water. When these ions were electrolyzed in 0.15M NH4Gl medium for 10 min. at -1.3V (VS. Ag- Hg electrode), the metals were elcctrodeposited on a mercury film electrode, and an anodic dissolution curve was recorded by an X-Y functional recorder from -1.3V to -0.1V. The peak heights were linear with concentrations within the range or 10-6M-10-8M for Cu, Pb, Zn and of 10-6M-10-9M for Cd. This method is suitable for the determination of trace amounts of these elements in water.

快速极谱仪与汞膜电极联用,阳极溶出伏安法同时测定水中铜、铅、镉、锌。在O.15MV氯化铵介质中,调节pH至5.5,于一1.3伏电解10分钟(对Ag-Hg电极),这些金属便电沉积在汞膜电极上,并用记录仪于-1.3伏~-0.1伏记录阳极溶出曲线。10~(-6)M~10~(-8)M的铜、铅、锌和10~(-6)M~10~(-9)M的镉,其浓度与峰高呈线性关系。此法适用于测定水质中的这些痕量元素。

This article describes a new process for the continuous decopperization of crude lead, which has been applied in the Shenyang Smelter since September 1974. The basic principle of the process and the structure of the furnace are described. The production practice, operational experience, principal technical indices and process improvements in the past five years are given in detail. The article further describes the following new propositions about the process. (1) There is no relationship between the copper...

This article describes a new process for the continuous decopperization of crude lead, which has been applied in the Shenyang Smelter since September 1974. The basic principle of the process and the structure of the furnace are described. The production practice, operational experience, principal technical indices and process improvements in the past five years are given in detail. The article further describes the following new propositions about the process. (1) There is no relationship between the copper content in decoppered lead and the lead content in the matte produced. Even when the Cu content in the decoppered lead is less than 0.08%, high Cu: Pb ratio matte can be produced. (2) The ratio be- tween sulfur and copper (S/Cu) in the charge should be 0.5 instead of 0.25. A ratio of 0.25 is not sufficient for the process. (3) In order to decrease the lead content in the matte and to raise the Cu: Pb ratio, it is necessary and reasonable to add some scrap iron to replace the lead in it. To judge the correct end point of iron addition is the crux of the process. The composition of the crude lead treated is as follows (%): 96-97.5 Pb, 0.8- 1.3 Cu, 0.3 As, 0.8 Sb and 0.2-0.5 S. The blast-furnace crude lead is charged into the furnace as hot liquid. Then 0.6-0.8% soda, 0.2-0.3% coke and 2% lead sulfide con- centrate are added. The decoppered lead is discharged from the end of furnace by syphoning. De- pending on the degree of aggregation, the matte and slag are discharged about once a day. After discharging the slag, scrap iron is added into the matte to replace the lead in it. The Cu content of the output lead is 0.05-0.08%, it may be cast into anodes directly for e1ectrolysis. Lead content of the tapped slag is<2%. The matte has a Cu: Pb ratio of 3-5 (average 4), and can be sent to the copper smelter to re- cover copper without additional treatment. The productivity of the furnace bed is 10-l2 t/m~2. day. The decopperization efficiency is about 95%. In the output lead the recovery of Pb is about 99%, Sb-80%, As-70%. The volatility of lead is 0.3-0.4%. Finally, it is pointed out that maintaining a S: Cu ratio of 0.5 is of importance to the decopperization and matte formation process and in the elimination of bloc- kage.

本文简要地叙述了沈阳冶炼厂的粗铅连续脱铜新工艺。文中就脱铜过程阐述了如下一些新的论点:脱铜铅含铜与产出的冰铜含铅(或铜铅比)无关。在脱铜铅含铜低于0.08%的同时,能够产出钢铅比较高的冰铜;炉料中的硫铜比应保持0.5,而不是0.25;为了降低冰铜含铅,提高铜铅比,向冰铜中加入铁屑置换其中的铅是必要的,合理的,准确地判断加铁过程的终点是这一操作过程的关键。

It is found experimentally that mandelic acid is an excellent masking agent for titanium (Ⅳ) at pH 3.0 to 7.0. It can quantitatively displace EDTA from the Ti-EDTA complex without the interference from zirconium, thorium, iron, bismuth, aluminum, gallium, indium, cerium and other rare earths, copper, lead, zinc, nickel, cobalt, cadmium, manganese etc.It is also found that mandelic acid is much superior to lactic acid, which was found to be a good masking agent for titanium. When the EDTA displaced from the Ti-EDTA...

It is found experimentally that mandelic acid is an excellent masking agent for titanium (Ⅳ) at pH 3.0 to 7.0. It can quantitatively displace EDTA from the Ti-EDTA complex without the interference from zirconium, thorium, iron, bismuth, aluminum, gallium, indium, cerium and other rare earths, copper, lead, zinc, nickel, cobalt, cadmium, manganese etc.It is also found that mandelic acid is much superior to lactic acid, which was found to be a good masking agent for titanium. When the EDTA displaced from the Ti-EDTA complex with lactic acid was titrated with a standard nitrate solution, the end point only lasted for 10 to 20 seconds if aluminium was present, because lactic acid could slowly displace EDTA from the Al-EDTA complex. We found that mandelic acid does not mask aluminum. This makes possible the stepwiso titrations of iron, titanium and aluminum using mandelic acid and ammonium fluoride as masking agents.

本文研究苦杏仁酸的隐蔽性能,发现它在pH2.5至7.0为钛(Ⅳ)的优良隐蔽剂,隐蔽能力随pH的增大而稍有降低。苦杏仁酸能置换络合钛的EDTA.在pH3~5.5,锆、钍、铁、铋、铝、镓、镧、铈、稀土、铜、铅、锌、镍、钴、镉、锰等不干扰置换滴定。本文发现苦杏仁酸不隐蔽铝,即使有大量铝时,也能准确地置换滴定钛。因此,苦杏仁酸比乳酸更为优越。本试验确定苦杏仁酸为钛的选择陸很高的隐蔽剂,故可能连续滴定铁铝钛。

 
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