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enrichment trend
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  富集趋势
     The results indicate the metals enrichment trend and the possibility ofenvironmental impact.
     探讨了金属的富集趋势以及对环境的二次污染问题。
短句来源
     Enrichment factors were calculated to analyze the PAHs enrichment trend at different depths of soil, and the influences of soil total organic carbon (TOC) and clay contents on vertical distribution of PAHs in soils in Tianjin area were discussed.
     研究了天津地区土壤中有机碳(TOC)和粘粒含量对多环芳烃(PAHs)纵向分布的影响,利用相对富集系数分析了PAHs在不同土壤深度的富集趋势
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  “enrichment trend”译为未确定词的双语例句
     Phl-rich peridotites (such as samples C25-143-61, C32-149-71) have the K_2O enrichment trend and good correlations between K_2O and some LILE such as Rb, Ba and Th. No positive correlations between K_2O and REE and between Sr and Ca are seen.
     富含金云母的橄榄岩(例如C25-143-61,C32-149-71)具有富钾趋势,并且显示K2O与Rb、Ba和Th等大离子亲石元素的正相关关系,未见K2O和稀土元素、Sr和Ca之间的相关关系.
短句来源
     The mid—ocean ridge basalts in this region show a strong iron enrichment trend but do not show a silicon enrichment trend. That indicates the magma after which originated from the upper mantle by equilibrium partial melting withstanded fractional crystallization of olivine and pyroxene and did not exercise fractional crystallization of magnetite and / or ilmenite, reflecting low fo_2of the magma system.
     本区洋脊拉斑玄武岩显示强烈的富铁趋势,但不具有富硅趋势,表明岩浆由上地幔平衡部分熔融形成后,曾经历过橄榄石、辉石的分离结晶作用,但没有产生磁铁矿或钛铁矿的分离结晶,说明岩浆体系的氧逸度较低。
短句来源
     In this paper, based on former researching works and regional geologic background analysis, we studied the distribution law of copper and geotectonic metallogenic characteristics of the ore deposit, and forecasted copper enrichment trend from copper deposit geologic characteristics' view, aiming at full understanding the metallogenic characteristics of Dongxiang copper deposit.
     本文针对东乡铜矿成矿特点,结合前人工作成果,在对区域地质背景分析的基础上,从铜矿地质特征着手,对铜元素分布规律、铜矿构造成矿特征及富矿预测进行深入剖析。
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  enrichment trend
The sediment δ15N values for both the rivers in the wet season showed an 15N enrichment trend in most of studied sites when compared to the dry season values, suggesting major input of nutrients as dissolved organic nitrogen and sewage nitrate.
      
Diopsidic to Fe-salitic (hedenbergitic) clinopyroxene is the major phenocryst phase, and shows a very strong Ti- and Al-enrichment trend (up to 5 wt% TiO2 and 12 wt% Al2O3).
      
An other evolution line by tholeiitic and 430-Ma alkaline within-plate basalt-type suites in both pre- and post-Early-Ordovician units is characterized by an intraplate mantle metasomatism and enrichment trend along multicomponent sources.
      
By this mechanism a regional south to north 18O-enrichment trend was simulated within the Lochseiten calc-mylonite.
      
Glass compositions define an Fe-enrichment trend and a density maximum for anhydrous liquids that coincides with a minimum in Mg#.
      
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Composition of volcanic rocks from some basins in the lower reach of the Yangtze River shows two variation trends, Si-enrichment trend and K-enrichment trend. Major element and trace element characteristics of volcanic rocks and quantitative modelling indicate that formation of all Si-enrichment trends in the region can be explained by fractional crystallization. K-enrichment trends from various basins are, however, different in their genesis. K-enrichment trend from Luzhong basin...

Composition of volcanic rocks from some basins in the lower reach of the Yangtze River shows two variation trends, Si-enrichment trend and K-enrichment trend. Major element and trace element characteristics of volcanic rocks and quantitative modelling indicate that formation of all Si-enrichment trends in the region can be explained by fractional crystallization. K-enrichment trends from various basins are, however, different in their genesis. K-enrichment trend from Luzhong basin is formed through fractional crystallization. Formation of K-enrichment trend from Lishui involves both fractional crystallization and assimilation. In Ningwu basin, K-rich rocks have no genetic relation with the early erupted aandesitic rocks and might be derived from an independent parent magma.

长江下游地区若干盆地不同旋回火山岩的化学成分存在2个不同的变异趋势,即富硅趋势和富钾趋势。富硅趋势主要由分离结晶作用形成的。富钾趋势的成因较为复杂。庐枞富钾趋势的形成与分离结晶作用有关,溧水富钾趋势涉及分离结晶与混染作用。而宁芜富钾岩石是由独立的母岩浆形成的。

There are several major types of altered rocks, such as K\|feldspathization, silication, pyritization, chloritization, etc. in the Dongping, Hougou, Shuijingtun gold deposits of Zhangjiakou area. The regularities found by quantitative calculation are obvious enrichment characteristic for major elements (SiO\-2, K\-2O, FeO) and metallogenic elements (sulphophile elements: Au, Ag, As, Sb, Bi, Pb, Zn) little enrichment trends for transitional elements (Cr, Co, Ni, Cu) in the altered rocks of three gold...

There are several major types of altered rocks, such as K\|feldspathization, silication, pyritization, chloritization, etc. in the Dongping, Hougou, Shuijingtun gold deposits of Zhangjiakou area. The regularities found by quantitative calculation are obvious enrichment characteristic for major elements (SiO\-2, K\-2O, FeO) and metallogenic elements (sulphophile elements: Au, Ag, As, Sb, Bi, Pb, Zn) little enrichment trends for transitional elements (Cr, Co, Ni, Cu) in the altered rocks of three gold deposits. Altered hydrothermal solution is a high\|silicon alkali fluid carrying metallogenic elements from deep\|seated.

张家口地区东坪、后沟、水晶屯金矿围岩蚀变发育 ,主要的蚀变类型有钾长石化、硅化、黄铁矿化、绿泥石化等。通过蚀变岩常量元素、微量元素的定量计算发现 ,三个金矿床围岩蚀变过程中元素迁移、富集有明显的规律 ,即常量元素 (SiO2 、K2 O、FeO) ,亲硫元素 (成矿元素 :Au、Ag、As、Sb、Bi、Pb、Zn)明显富集 ,其它亲铜亲铁元素 (Cr、Co、Ni、Cu)略有富集。蚀变热液是一种来自深部的携带亲硫元素富硅的碱性流体

The preliminary testing results obtained through ecological geochemical survey and assessment of Jiangsu Province include vertical distribution of relevant trace elements in part lake sediments, vertical variability of some element contents with depth within typical soil samples, and trace element partition between rice and husks in the paddy. By analyzing and contrasting elements' contents and its change within relevant studied samples, basic conclusions have been obtained as the following: (1) vertical distribution...

The preliminary testing results obtained through ecological geochemical survey and assessment of Jiangsu Province include vertical distribution of relevant trace elements in part lake sediments, vertical variability of some element contents with depth within typical soil samples, and trace element partition between rice and husks in the paddy. By analyzing and contrasting elements' contents and its change within relevant studied samples, basic conclusions have been obtained as the following: (1) vertical distribution of relevant trace elements of bottom sediments is mainly controlled by changing depositing environment in Hongzehu Lake, and there is a obvious relative enrichment trend of heavy metals at about 20cm deep ranges in upper sediments in Taihu Lake, so it is thought that there is obvious artificial pollution of heavy metals in its present upper 0~20cm depth sediments from some local areas of Taihu Lake, and there is a distinct positive correlation between nitrogen and total organic carbon in sediments from Taihu and Hongzehu Lake; (2)vertical characteristics of heavy metal elements within typical soil columns shows urbanization resulted in more complicated variation of element contents at different soil depths and made soil depth polluted by heavy metals become deeper sharply in some urban and its suburb, and the human activity has more influences on environmental change of soil on urban than on rural ones; (3)experimental data from some testing samples of paddy point out that molybdenum is liable to enrichment in race, and other heavy metal and health-giving trace elements, for example for Zn, Co, Ni, Cd, Pb, As, Se, Ca, Cu, Fe, Mg, Mn, and so on, are liable to enriched in husk of paddy at most,there is not a very obvious and constant partition relationship between rice and paddy for every elements in total 14 testing samples. Above stated studying experiences and its information can provide a part of helpful clues and suggestions for present developing agro-geological survey in our nation.

报道了“江苏省国土生态地球化学调查”项目有关湖积物、土壤柱微量元素垂向分布及稻谷样元素分配研究的初步成果。通过对有关样品元素含量的分析对比,指出洪泽湖沉积柱元素垂向分布与其动荡的沉积环境关系密切、太湖局部沉积物在其目前20cm以上深度存在人为重金属污染,这二湖沉积物中其氮与总有机碳含量呈显著正相关;认为城市化可使当地土壤环境受重金属等污染的深度显著加大、城市土壤环境受人为活动的影响要显著高于农村;发现Mo易富集于稻米、重金属与营养元素易富集于稻皮、各元素在米-谷间的分配关系不确定。

 
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