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copper
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  铜矿
    Research on Metallogenic Searies of Copper Deposits in East Tianshan Mountains
    东天山铜矿区域成矿系列研究
短句来源
    On Main Types and Exploration Prospect for Copper Deposits in Gansu Province, China
    甘肃省铜矿主要类型与勘查前景研究
短句来源
    The Quantitative Prediction of Large and Super Large Copper Mineral Deposits Concentration Area Based on the Comprehensive Information in China
    中国大型、超大型铜矿床密集区综合信息定量预测
短句来源
    FRAMBOIDS OF STRATA-BOUND COPPER ORES AND THEIR GEOLOGICAL SIGNIFICANCE
    层控铜矿的显微莓群及其地质意义
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    Porphry copper
    斑岩铜矿
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  “copper”译为未确定词的双语例句
    Study on the Metallogeny of Copper Deposits in Beishan Area, Gansu Province
    甘肃北山铜矿床成矿学研究
短句来源
    THE CHARACTERISTICS OF THE SULFUR ISOTOPIC COMPOSITION OF WUSHAN COPPER DEPOSITS
    武山铜矿床硫同位素组成特征
短句来源
    DIVISIONS OF PETROFACES AND PETROGRAPHIC CHARACTERISTICS OF Y_1 MASSIF IN KA COPPER NICKEL ORE DISTRICT
    喀拉通克铜镍硫化矿床Y_1号岩体岩相划分及岩石特征
短句来源
    GEOLOGICAL CHARACTERISTICS AND ORE-CONTROLLING FACTORS OF THE LONGMENSHAN COPPER DEPOSIT
    龙门山铜矿床地质特征与成矿控制因素
短句来源
    The Characteristics of a High As Content, Arsenic-bearing Copper Ore in Jiangxi Province
    江西高砷铜矿石的含砷特征
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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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The present paper briefly introduces the theories of anomalous magnetic fields of conductive cylinder induced by homogeneous current field in full space and in semi-space. Theoretical for mulae and their interpretation are given, as well as calculated profile curves of magnetic rest stivity and magnetic induced palarization methods. Experimental results on appropiate models and on copper ore bodies of disseminated types are obtained, which agree well with the theories.

本文简要介绍导电柱体在全空间和半空间的均匀电流场中形成的异常电流磁场理论,给出了正、反演理论公式;计算出了磁电阻率法和磁激发极化法理论剖面曲线;得到了相应的模型实验结果以及在浸染型铜矿上的野外试验结果。这些资料证明了所建立的理论。

Through detailed field and laboratroy studies, it is found that in the Fenglin mining district and its vicinities, Dongxiang, Jiangxi, volcanics occur in the Zishan formation of lower Carboniferous age and in the lower part of the Huanglung limestion formation of Middle Carboniferous age. They comprise dacite, rhyolite lavas, and acid to acid-intermediate tuff, tuff-breccia, and tufaceous sediments, with a total thickness of more than 20 meters. Interbedded with these chiefly submarine volcanic beds and other...

Through detailed field and laboratroy studies, it is found that in the Fenglin mining district and its vicinities, Dongxiang, Jiangxi, volcanics occur in the Zishan formation of lower Carboniferous age and in the lower part of the Huanglung limestion formation of Middle Carboniferous age. They comprise dacite, rhyolite lavas, and acid to acid-intermediate tuff, tuff-breccia, and tufaceous sediments, with a total thickness of more than 20 meters. Interbedded with these chiefly submarine volcanic beds and other marine sediments, are stratiform pyritic copper beds, consisting chiefly of pyrite, melnikovite, siderite, chalcopyrite, and some sphalerite and galena, which attain a total thickness of some 28 meters, and constitute a mediumsized copper mining district. Above the pyritic copper beds, occur siliceous hematite beds of some 13 meters in thickness, succeeded by chert beds and ferruginous flint of 20—30 meters in thickness, The entire succession in by Huanglung limestone. Most of siliceous hematite beds are tungsten-bearing and those considered to be low-grade tungsten ores measuring some 8 meters in thickness. Tungsten occurs mainly as absorbed ions the ferric oxide layers, averaging about 0.3—0.4% WO_3. Only through later recrystallization accompanied with some intrusive apophyses of granodiorite porphyry, does it occur in minute crystals of ferberite and scheelite. Due to their close association with submarine volcanics and marine sediments, these pyritic copper deposits and the tungsten-bearing hematite beds are considered to be formed by submarine exhalant-sedimentary processes. During the yanshanian period there have been some weak reconstitution and superimposition by hydrothermal processes.

通过野外和室内的仔细研究,在枫林矿区及其外围下石炭统梓山组及中上石炭统壶天群下部,发现有广泛的火山岩,包括英安斑岩、流纹岩,及酸性到中性的凝灰岩,凝灰角砾岩及火山碎屑沉积岩等,总厚度20余米。与这些主要海底火山岩层及其他海相沉积物互层的为层状黄铁矿型铜矿层,它主要是由黄铁矿,胶黄铁矿,菱铁矿,黄铜矿,辉铜矿及少量闪锌矿等组成,其总厚度约28米,构成中型的铜矿山。在黄铁矿型铜矿层之上,有厚达13米的硅质赤铁矿层及20—30米厚的硅质岩层,再往上完全复盖以壶天群灰岩。大部分硅质赤铁矿层都是含钨的,并构成低品位的钨矿床,其厚度为8米,钨主要呈离子状态被吸附在赤铁矿层中,只有在受到花岗斑岩影响的地段,经过后期热液作用,才偶尔见到钨铁矿、钨锰矿及白钨矿的细小晶体。总之,由于这些黄铁矿型铜矿床及含钨赤铁矿层与海底火山岩及海相沉积物具有的密切联系,所以它们被认为是由海底火山沉积作用形成的。并在燕山期又受到微弱的热液迭加及改造作用。

Through detailed field and laboratroy studies,it is found that in the Feng- lin mining district and its vicinities,Dongxiang,Jiangxi,volcanics occur in the Zishan formation of lower Carboniferous age and in the lower part of the Huanglung limestion formation of Middle Carboniferous age. They comprise dacite,rhyolite lavas,and acid to acid-intermediate tuff, tuff-breccia,and tufaceous sediments,with a total thickness of more than 20 meters.Interbedded with these chiefly submarine volcanic beds and other marine...

Through detailed field and laboratroy studies,it is found that in the Feng- lin mining district and its vicinities,Dongxiang,Jiangxi,volcanics occur in the Zishan formation of lower Carboniferous age and in the lower part of the Huanglung limestion formation of Middle Carboniferous age. They comprise dacite,rhyolite lavas,and acid to acid-intermediate tuff, tuff-breccia,and tufaceous sediments,with a total thickness of more than 20 meters.Interbedded with these chiefly submarine volcanic beds and other marine sediments,are stratiform pyritic copper beds,consisting chiefly of pyrite,mel- nikovite,siderite,chalcopyrite,and some sphalerite and galena,which attain a total thickness of some 98 meters,and constitute a mediumsized copper mining district.Above the pyritic copper beds,occur siliceous hematite beds of some 13 meters in thickness,succeeded by chert beds and ferruginous flint of 20—30 meters in thickness,The entire succession in by Huanglung limestone.Most of siliceous hematite beds are tungsten-bearing and those considered to be low-grade tungsten ores measuring some 8 meters in thickness.Tungsten occurs mainly as absorbed ions the ferric oxide layers,averaging about 0.3—0.4% WO_3. Only through later recrystallization accompanied with some intrusive apop- hyses of granodiorite porphyry,does it occur in minute crystals of ferberite and scheelite.Due to their close association with submarine volcanics and marine sediments,these pyritic copper deposits and the tungsten-bearing hematite beds are considered to be formed by submarine exhalant-sedimentary processes.During the yanshanian period there have been some weak reconstitution and superimposition by hydrothermal processes.

通过野外和室内的仔细研究,在枫林矿区及其外围下石炭统梓山组及中上石炭统壶天群下部,发现有广泛的火山岩,包括英安斑岩、流纹岩,及酸性到中性的凝灰岩,凝灰角砾岩及火山碎屑沉积岩等,总厚度20余米。与这些主要海底火山岩层及其他海相沉积物互层的为层状黄铁矿型铜矿层,它主要是由黄铁矿,胶黄铁矿,菱铁矿,黄铜矿,辉铜矿及少量闪锌矿等组成,其总厚度约28米,构成中型的铜矿山。在黄铁矿型铜矿层之上,有厚达13米的硅质赤铁矿层及20—30米厚的硅质岩层,再往上完全复盖以壶天群灰岩。大部分硅质赤铁矿层都是含钨的,并构成低品位的钨矿床,其厚度为8米,钨主要呈离子状态被吸附左赤铁矿层中,只有在受到花岗斑岩影响的地段,经过后期热液作用,才偶尔见到钨铁矿、钨锰矿及白钨矿的细小晶体。总之,由于这些黄铁矿型铜矿床及含钨赤铁矿层与海底火山岩及海相沉积物具有的密切联系,所以它们被认为是由海底火山沉积作用形成的。并在燕山期又受到微弱的热液迭加及改造作用。

 
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