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abnormal enrichment
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  超常富集
     Resources and environmental effects of abnormal enrichment of dispersed elements: research situation and tendency
     分散元素超常富集的资源与环境效应:研究现状与发展趋势
短句来源
     Future research on the mechanism of abnormal enrichment of dispersed elements and its resources and environmental effects should be focused on three main aspects, i.e., the metallogenic geodynamics of enrichment districts of dispersed elements, the generality and discrepancy in mineralization of dispersed (elements) and chemical dynamics of their intergrowth and/or separation with other mineralizing elements, and the geochemical behaviors of dispersed elements during supergene circulation and their constraints on (ecological) and environmental systems.
     未来对分散元素超常富集机理及资源与环境效应研究,应着重于三方面,即:分散元素矿集区的成矿大陆动力学背景、分散元素成矿作用的共性和差异性及与其他矿化元素共生-分异的化学动力学机制、表生循环过程中分散元素的地球化学行为及其对生态和环境的制约。
短句来源
     The analysis on aspects of geochemical conditions such as the activation,migration,adsorption or reduced precipitation of the dispersed elements in surficial circumstance,and on independence of the abnormal enrichment of the dispersed elements in the sandstone-hosted uranium orebody has indicates that,(1) the dispersed elements contained in source rocks could be activated and migrated by surface water under arid and semi-arid climate;
     表生环境下分散元素活化迁移、吸附或还原沉淀的地球化学条件,以及分散元素在砂岩铀矿床中超常富集的独立性研究表明,(1)干旱、半干旱等表生条件下,分散元素可以被含氧地表水从蚀源区岩石中汲取、活化并迁移;
短句来源
  “abnormal enrichment”译为未确定词的双语例句
     The translocation and distribution pattern of K~+,Ca~(2+) and electric conductivity had no remarkable difference between the control and the treatment with low REEs dose,while high REEs changed the pattern markedly and caused the abnormal enrichment of ions in the rhizosphere, which indicated the treatment with high REEs did strongly harm to the rhizosphere environment.
     低浓度稀土处理下的离子分布模式和电导率与对照相比差异不大,但高浓度处理显著改变其分布模式,造成离子在根际的非正常累积,说明高浓度处理对根际环境具有较强的破坏作用。
短句来源
     Marine oils from the tableland-basin region in Tarim basin generally contain abundant aryl-isoprenoids with the carbon number range of C10~C23.The pyrolytic products of the bitumen fraction in the oils are also characterized by a typical sulphur bacteria origin,i. e. ,an abnormal enrichment of tetra-methyl benezenes in the C2~C5alkyl benzene fraction.
     塔里木盆地台盆区海相原油中普遍检出含量丰富的C10—C23系列芳基类异戊二烯烃化合物,原油沥青质裂解产物也显示出绿硫细菌来源的典型标志:C2—C5烷基苯系物中具有高丰度四甲基苯异常分布特征。
短句来源
     (2) the geochemical barrier which is needed for adsorption or reduced precipitation of the dispersed elements dissolved in groundwater could be formed in the interlayer oxidation zone,(3) the abnormal enrichment of the dispersed elements in sandstone-hosted uranium orebody is relatively independent.
     (2)层间氧化带之氧化-还原过渡带可以形成导致溶解于水的分散元素被吸附固定或还原沉淀所需的地球化学障条件; (3)砂岩铀矿床中的分散元素超常或异常富集具有相对独立性。
短句来源
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     异常妊娠
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     试论非正规就业——兼谈我国妇女的非正规就业
短句来源
     job enrichment;
     工作丰富化,加强员工工作创造性;
短句来源
     Resources and environmental effects of abnormal enrichment of dispersed elements: research situation and tendency
     分散元素超常富集的资源与环境效应:研究现状与发展趋势
短句来源
     Advancemens of Rotifer Enrichment
     轮虫营养强化技术研究进展
短句来源
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  abnormal enrichment
The abnormal enrichment of noble metal elements is closely related with hydrothermal fluid that flew out on the sea floor through deep cycling and reaction with Proterozoic ultramafic-mafic igneous rocks forming noble metal rich fluid.
      
Available data on the abnormal enrichment with respect to 235U (up to 27%) of hot fuel particles in soils of the CNPP service zone are analyzed.
      


Based on data acquired from a pressurized thermal simulation experiment (T = 270℃ ~390℃ ) in which both oil generation and expulsion from two brown coals are inspected, the characteristics of sterane and terpane products are studied in this paper. The results indicate:(1) The abnormal enrichment of C31 +components in hopane series may be related to a strong reducing environment, and their abnormal lack may have something to do with an oxidation environment. (2) Because the activation energy of isomerization...

Based on data acquired from a pressurized thermal simulation experiment (T = 270℃ ~390℃ ) in which both oil generation and expulsion from two brown coals are inspected, the characteristics of sterane and terpane products are studied in this paper. The results indicate:(1) The abnormal enrichment of C31 +components in hopane series may be related to a strong reducing environment, and their abnormal lack may have something to do with an oxidation environment. (2) Because the activation energy of isomerization of sterane and hopane is lower than that of vitrinite, the isomerization rates of sterane and hopane are much faster than that of vitrinite in geological low temperature, but the situation is converse in the condition of high temperature of laboratory. (3) Many ratios in sterane or terpane related to the difference of molecular size can be acted as migration parameters.

在对两个褐煤样品进行同时考虑生烃和排烃模拟实验的基础上,本文对其甾、萜标记物的组成、分布和演化进行了研究,探讨了其生源意义、成熟演化及与自然演化的异同和甾、萜参数作为运移指标的意义。

In this paper, the authors put forward a new mineralization mechanism to explain the origin of oxidized stratiform ore bodies in the Yulong copper deposit. The proposed mechanism includes two stages, i. e. , the vertical oxidation and enrichment stage and the subsequent lateral migration and telescoped enrichment stage.After the Yulong porphyry body was emplaced into copper-bearing strata of the Upper Tri-assic Jiapela Formation, wrigglites and associated primary stratiform ore bodies were formed a-long the...

In this paper, the authors put forward a new mineralization mechanism to explain the origin of oxidized stratiform ore bodies in the Yulong copper deposit. The proposed mechanism includes two stages, i. e. , the vertical oxidation and enrichment stage and the subsequent lateral migration and telescoped enrichment stage.After the Yulong porphyry body was emplaced into copper-bearing strata of the Upper Tri-assic Jiapela Formation, wrigglites and associated primary stratiform ore bodies were formed a-long the contact zone bet-ween hornhels of the Jiapela Formation and marbles of the Bolila Formation. With the rise of the earth's crust and denudation of cap rocks of the ore bodies, the stratiform porphyry ore bodies were uplifted to the surface in the first stage. They were significantly oxidized by underground water and, as a result, vertical telescoped mineralization developed. Oxidation of pyrite near the surface resulted in the downward penetration of acid oxidizing solutions through ore bodies and the formation of secondary sulfides near the water table. Since the CO2 content was low in the vertically leaching copper-bearing solution, secondary oxidation and enrichment zones were not well developed in the deposit.When stratiform porphyry ore bodies were uplifted to the surface in the second stage, Cu and some other useful elements were dissolved into water and laterally transported into oxidized ore bodies with a high porosity and permeability. During the long-term flow of acid solution a- long bedding, oxidization further developed and the preexisting secondary oxides and sulfid were dissolved once again. Ore-forming elements of oxidized stratiform ore bodies were deriv from both wrigglites and porphyry ore bodies. Therefore, the lateral migration and accumulati are believed to be responsible for the abnormal enrichment of copper in layered ore bodies in t Yulong deposit.

本文阐述了西藏玉龙铜矿床成矿过程中的“沉积初步富集期”和“西藏玉龙铜矿床次生氧化成矿作用模式”,这不仅对指导当前生产具有重要的现实意义,而且为在玉龙铜矿带进一步找矿工作开劈了新的方向。

The Lincang germanium deposit is located in the Bangmai coal bearing clastic rock basin with granites as the basement in Lincang County, western Yunnan Province. There are three coal bearing cycles (N1b2, N1b4 and N1b6) in the basin. Germanium present in the form of organic compounds mainly occurs in the lignite of the first coal cycle (N1b2), which is close to the basement granites. This cycle is mainly composed of clastic rocks, coal seams, layered siliceous rocks and carbonatites. REE geochemistry of lignites...

The Lincang germanium deposit is located in the Bangmai coal bearing clastic rock basin with granites as the basement in Lincang County, western Yunnan Province. There are three coal bearing cycles (N1b2, N1b4 and N1b6) in the basin. Germanium present in the form of organic compounds mainly occurs in the lignite of the first coal cycle (N1b2), which is close to the basement granites. This cycle is mainly composed of clastic rocks, coal seams, layered siliceous rocks and carbonatites. REE geochemistry of lignites and its relationship with germanium mineralization is discussed based on the study of rare earth element compositions and germanium content of Ge rich lignites from the first cycle (N1b2) and non germanium lignites from the second cycles (N1b4), and the comparison with hydrothermal genetic siliceous rock in the first cycle, and the basemental two mica granites in the Lincang germanium deposit. The results indicate that Ge rich lignites contain 25.477~2522.906 μg/g germanium, ΣREE varies from 5.070 to 148.225 μg/g, while non germanium lignites contain less than 0.781 μg/g germanium and ΣREE varies from 32.186 to 46.803 μg/g. Both the Ge rich lignite and non germanium lignites have distinct negative Eu anomaly and weak positive Ce anomaly. A negative correlation was found between Ge content and LREE/HREE, (La/Yb)N and (Gd/Yb)N in the Ge rich lignites. Compared to non germanium lignite, especially when germanium content is less than 200 μg/g, the REE pattern of low germanium lignite is plan, while germanium content increases, HREE relatively concentrates. The North American Shale normalized REE patterns of non germanium lignite and Ge rich lignite are similar to the basemental granites, suggesting that the REE of Ge rich lignites and non germanium lignites came from the muscovite granites in the basement of the sedimentary basin. The results also show that the NAS normalized REE patterns of non germanium lignites and low germanium lignites are plain, suggesting that they formed under ordinary sedimentary environment. But Ge rich lignitesNAS normalized REE patterns are variable, HREE concentrates with the increasement of germanium, their NAS normalized REE patterns are similar to siliceous rocks which formed under hydrothermal environment, indicate the Ge rich lignite are influenced by hydrothermal water. The germanium content of non germanium lignite is very low, indicating that under ordinary sedimentary environment, the abnormal enrichment of germanium in lignite is not controlled by the continental source materials or the leaching solution, which produced by the weathering of the basemental two mica granites. The distribution of Ge rich lignite is consistent with siliceous rocks, siliceous rocks contain 78.374 μg/g germanium in average, their REE and trace element compositional feature are similar, suggesting most germanium in lignite was mainly brought by hydrothermal water.

采用ICP-MS测定了临沧锗矿中51件含矿煤、5件无矿煤的稀土元素和锗含量,并与含矿煤层中热水成因燧石及基底白云母花岗岩进行对比,探讨了含矿煤与无矿煤的稀土元素地球化学及其与锗超常富集的关系,得出几点初步认识:(1)无矿煤和含矿煤的稀土元素主要来自基底白云母花岗岩;(2)无矿煤属正常沉积产物,含矿煤组成叠加了热水活动产物;(3)形成临沧锗矿的锗可能主要由热水活动带来。

 
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