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hydrothermal convection
相关语句
  水热对流
     In this paper the results of computer simulation of the effect of hydrothermal convection along faults, as well as the occurrences of faults, mountain relief and contrast in thermal conductivity of sedimantery basin and basement rocks as four major conditioning factors on the distribution of conductive surface heat flow in eight original and seven combined models are reported.
     本文对8个初始模型和7个组合模型中沿断层的水热对流、断层产状、山体地形和沉积盆地与基岩热导率反差等四个影响因素对传导型地表热流分布的影响进行了计算机模拟研究。
短句来源
     Based on the analysis of geothermal geology and hydrothermal convection system, the hot groundwater is formed from the mixing of the deep circulating high temperature structural fissure water with the shallow circulating ordinary temperature karstic water in the hydrothermal convection system.
     根据地热地质条件及水热对流系统分析 ,地下热水是在水热对流系统中由深循环高温构造裂隙水与浅循环常温岩溶水混合而成。
短句来源
  热液对流
     Mechanism of Hydrothermal Convection and Alteration-Mineralization Zoning in Yinshan Cu-Pb-Zn Deposit,Jiangxi
     江西银山铜铅锌矿床热液对流与蚀变矿化分带机制
短句来源
     The coupling of ore-formation/ hydrocarbon-formation is a phenomenon of convection-circulation of in the hydrothermal system. Oil accumulation in the hydrothermal convection system has universal significance, which is the basis for oil prospecting in the submarine area of hotwater activity or hotuabnomality.
     成矿/成烃耦合是成矿热液对流循环的一种现象,对流循环系统成油机制可能具有普遍的意义,是在海底热液活动区或热异常区寻找油气藏的依据。
短句来源
     Ore-forming substance often is of many different sources in hydrothermal convection mineralization, which determine the complicated evolution route and mingling mechanism of S, O, C and Pb isotopes.
     热液对流成矿过程还是导致成矿物质的多来源性及不同来源物质混合的重要原因,并决定了硫、氧、碳、铅等稳定同位素演化路径和混合机制的复杂性。
短句来源
     And it is indicated that the hydrothermal fluids sedimentated to form ore minerals in different stages and formed different ore deposit types because of the long term hydrothermal convection, tectonic pulsation and the changing of physicochemical condition.
     在长期的热液对流循环中 ,随着构造脉动和物理化学条件的改变 ,沉淀出不同阶段的矿石 ,并在不同的构造部位和围岩中形成不同类型的矿床。
短句来源
     Preliminary enrichment of ore-forming matter in magmatic rock and hydrothermal convection are the two processes in mineralization.
     银山矿床的形成经历了岩体初始富集和热液对流两个过程.
短句来源
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  “hydrothermal convection”译为未确定词的双语例句
     A STUDY ON THE FOSSIL HYDROTHERMAL CONVECTION SYSTEM IN THE QINDAO COMPLEX BATHOLITH OF GRANITOIDS
     青岛花岗岩类复式岩基的古化石热水体系研究
短句来源
     HYDROTHERMAL CONVECTION MODEL OF GROUNDWATER AND THE CORRESPONDING HYDROCARBON ACCUMULATION MODEL FOR THE NORTH SONGLIAO BASIN
     松辽盆地北部地下水热对流及油气聚集模型
短句来源
     The "reversed" distributive rule of TDS for the groundwater in this area is contributed to the hydrothermal convection of groundwater.
     该区地下水矿化度的“倒转”分布规律是因地下水的热对流运动而形成的。
短句来源
     According to the hydrocarbon accumulation model based on the hydrothermal convection geologic model of groundwater in the basin,there are three types of hydrocarbon accumulation sites. The margin of the basin is the rapid change area of groundwater flow,in which the hydrocarbon carried by groundwater accumulates into pools in favorable traps (type C).
     根据盆地地下水热对流地质模型建立的油气聚集模型可将油气聚集场所分为3大类 :盆地边缘为地下水流动急剧变化区 ,地下水所携带的油气在有利的圈闭中聚集成藏 (C类 ) ;
短句来源
     A hydrothermal convection model according to the geohydrologic condition of the Central Hunan Basin is established.
     根据湘中盆地的水文地质特征,建立了热-重力驱动型的流体运移模型;
短句来源
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  hydrothermal convection
Here, we deduce that heat from these magma chambers drove hydrothermal convection systems causing widespread demagnetization, especially in the subedifice complexes, but also locally within the edifices themselves.
      
These observations, combined with results of a recent heat budget analysis of the lake, have led to the development of hydrothermal convection model for the upper portion of the vent.
      
An early, small-scale hydrothermal circulation system was initiated by the OUG prior to the large-scale hydrothermal convection established by the later Layered Cuillins Complex (LCC).
      
Hydrothermal convection initiated by emplacement of the gabbro-syenite complex of Abu Khruq into the Egyptian basement 89 Ma ago systematically altered the trace element and isotopic compositions of the syenites.
      
Alkali olivine basalts from Skye were simultaneously contact metamorphosed by Tertiary gabbro and granite intrusions and altered by the hydrothermal convection system that the plutons induced.
      
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In this paper, first, ore-forming phenomena and basic characteristics of hot spring are briefly introduced in the East Pacific Rise.These hot spring consist of two primary stractural elements: (1) basal mounds of accumulated sulfide debris, and (2) chimney edifices, These chimneies include the black smoker chimney, the white smoker chimney, deadchimney,and the white smoker "snowball". The hot fluid temperatures in the chimney vent range from 300 to 350℃. Secondly, we lay emphasis on the comparison between the...

In this paper, first, ore-forming phenomena and basic characteristics of hot spring are briefly introduced in the East Pacific Rise.These hot spring consist of two primary stractural elements: (1) basal mounds of accumulated sulfide debris, and (2) chimney edifices, These chimneies include the black smoker chimney, the white smoker chimney, deadchimney,and the white smoker "snowball". The hot fluid temperatures in the chimney vent range from 300 to 350℃. Secondly, we lay emphasis on the comparison between the ore-forming phenomena of hot spring and typical massive sulfide deposits, showing that they have the similar, or the same as mechanism. The massive sulfide deposit in the Baiyinchang, China and the Kuroko-type deposit in Japan can be compared. Finally, we discuss the ore-forming process of hot spring in the sea floor,considering that the hot spring ore-forming or the hydrothermal convection oreforming in sea floor changes from a ore-forming hypothesis into a live-force theory being directly obsereved.Reinvestigation in volcanic rock areas of China has certainly theoretical and practical significance for either ore genesis or ore prospecting.

本文首先简要介绍了东太平洋洋隆上的热泉成矿现象及其基本特征,它们主要由两类原生构造单元组成:即堆积硫化物碎屑形成的基底岗丘和高耸的烟筒(包括黑烟筒、白烟筒、枯竭的烟筒和白烟雪球)。烟筒喷口热流体温度为300—350℃。同时对这种热泉成矿现象与典型的块状硫化物矿床作了对比,表明两者具相同的成因机制。如我国白银厂块状硫化物矿床与日本的黑矿型矿床等。文中最后论述了海底热泉成矿作用。认为海底热泉成矿或海底热液对流成矿说已由假说变成一种可直接观察的有生命力的理论。在我国火山岩地区作进一步的调查研究,无论对该矿床的成因还是找矿勘探均有一定的理论和实际意义。

Exhalative-sedimentary ores are of the syngenetichydro thermal origin. The underlying stockword zone of the stratiform orebody and the exhalites in ore-bearing zone are the main features of these deposits.The concordant single lens or the vertical array of ore lenses in a definite strata horizon, the massive banded and laminated ore structures and the metal zoning in vertical direction through the ore-bearing sequences are also of the characteristics showing the syngenetic-hydrothermal origin. The hydrothermal-convection...

Exhalative-sedimentary ores are of the syngenetichydro thermal origin. The underlying stockword zone of the stratiform orebody and the exhalites in ore-bearing zone are the main features of these deposits.The concordant single lens or the vertical array of ore lenses in a definite strata horizon, the massive banded and laminated ore structures and the metal zoning in vertical direction through the ore-bearing sequences are also of the characteristics showing the syngenetic-hydrothermal origin. The hydrothermal-convection model may successfully explain the conditions and processes of the formation of these ore deposits, and the size of the deposits is tested by using a thermal balance model.

大的喷气沉积型矿床可能由穿过盆地沉积柱进入基底岩系的热水对流房排放到海底形成。热液对流模式已经取得多方面地质地球化学证据及流体动力学的定量检验。喷气成矿作用是在很长地质历史时期中广泛发育的一种重要成矿作用。大陆边缘断裂槽中的深囟水盆及相邻的碳酸盐台地上的沉陷洼地都是有利的成矿环境。

Three kinds of uranium-rich ore have been recognized. They are uranium-rich ore type, ore deposit and orebody. Both deposits No. 201 and No. 361 hosted in grant es are attributed to uranium-rich ore deposit. They formed in very favourable conditions such as abundant uranium source derived from granites and probably partly from depth, deep-seated faults, good semi-closed ore traps, stable regime of structure and hydrothermal convection systems and sufficient redox. It has been found that the principal mechanism...

Three kinds of uranium-rich ore have been recognized. They are uranium-rich ore type, ore deposit and orebody. Both deposits No. 201 and No. 361 hosted in grant es are attributed to uranium-rich ore deposit. They formed in very favourable conditions such as abundant uranium source derived from granites and probably partly from depth, deep-seated faults, good semi-closed ore traps, stable regime of structure and hydrothermal convection systems and sufficient redox. It has been found that the principal mechanism of formation of uranium-rich ore lies in keeping on precipilating uranium minerals with little or small quantity of gangue minerals simultaneously settled down from ore-forming solutions. Experiments show that CO_2 escaping from the UO_2~(2+)-CO_2-H_2S-SiO_4~(4-)system is favourable for pitchblende to deposit separately from SiO_2. It may be explained that CO_2 escaping from the system causes increase of pH, which in turn raises the solubility of SiO_2 and prevents it from further deposition.

区分出3种基本类型富矿:富矿类型、富矿床和富矿体。赋存于花岗岩中的201和361矿床均属于富铀矿床。它们形成于非带有利的条件,如丰富的来自花岗岩和可能部分来自深部的铀源;深断裂;良好的半封闭储矿构造;稳定的构造和热液对流系统以及充分的氧化还原。业已查明,持续保持■矿物沉淀而伴生的脉石矿物不沉淀或少沉淀是形成富铀矿的基本机制。实验表明,二氧化碳从UO_2~(2+)-CO_2-H_2S—SiO_4~(4-)体系中逸出,有利于沥青铀矿与SiO_2分开沉淀.其原理是二氧化碳从体系中逸出引起pH的增高,从而提高了SiO_2的溶解度,阻止其沉淀。

 
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