查询词典 trace elements

The result of factor analysis can provide the changes of relative precipitation and temperature variations. In trace elements, Cu, As, Zn, Pb and Ni were apparently enrichmented in soil layers and are sensitive to climatic changes. Carbon isotope is more sensitive to climatic changes than that of oxygen isotope in loess stratigraphy. The heavy mineral are varified in the loess stratigraphy, but their content differences between loess and palaeosol is little. Though the palynologic analyses results reveal that pollens and spores are fewer in the loess stratigraphy, they differ greatly in loess layer and palaeosol layer not only in species but also in types, i. e., the pollens and spores indicating warm and moist climate, such as Lles, Podocarpus, Polopydium, Pteris grerilliana Wall, Pterocarya and Juglans appear in palaeosol layers, while those indicating cold and dry climate such as Ephedra, Artemisia, Chinopodiaceae, Picea and Abies exist mainly in loess layers. The pollen content of broad-leaved tree mainly consisting of Pterocarya is up to 60% in palaeosol 〓, while the content of Ephedra is more than 50% in 〓 loess layer, showing that the environment differed greatly when 〓 and 〓 were formed.

当然，常量元素氧化物的组合因子分析结果可提供相对降水与相对温度在剖面的变化，因而来反映气候状况更为理想；微量元素中Cu、As、Zn、Pb与Ni在成土过程中富集明显，亦较好地反映了气候变化；稳定同位素中的碳同位素比氧同位素更能敏感记录气候的变化；研究区黄土地层中重矿物种类较多，但黄土层与古土壤层中含量差异不大；孢粉分析结果揭示，尽管研究区黄土层中孢粉总量相对较为贫乏，但黄土层与古土壤层中孢粉种属相差较大：在古土壤层内出现了指示相对暖湿环境的冬青属、罗汉松属、水龙骨属、林下凤尾蕨、枫杨、胡桃等植物孢粉，而黄土层中麻黄、藜科、蒿属及冷杉、云杉含量较高。

The feature of oxygen isotope for magnetite from Abagong iron deposit reflects that the water in the fluid of mineralization resides in the initial magma, implying the magma genesis of mineralization. The similaritary features of REE and trace elements for coexisting apatite with magnetite in the Abagong, the Kiruna type and the Ninwu porphyrite iron deposit show their common genesis, indicating that Abagong iron deposit resulted from the intrusion of late ore magma due to the magma differentiation. The characteristic of sulfur isotope composition implies that the Abagong iron deposit resides in basaltic magma from mantle resource.

阿巴宫铁矿磁铁矿氧同位素特征反映了成矿流体中水来源于原始岩浆水，暗示该铁矿的岩浆成因；与磁铁矿共生的磷灰石稀土和微量元素特征与Kiruna型铁矿以及宁芜玢岩铁矿中磷灰石特征非常相似，表明它们具有相同的成因机理，反映出阿巴宫铁矿为岩浆分异的晚期矿浆贯入式成因；其硫同位素特征表明成矿物质源自幔源的玄武质岩浆。

Yfzhg05. Seawater contains a lot of sodium chloride, magnesium chloride, potassium bromide and other inorganic salts, and many trace elements.

海水中含有大量的氯化钠、氯化镁、溴化钾等无机盐和许许多多微量元素。

It was found that the section was brittle. The scales of the pangolin were composed of the very thin prismy construction units and the folded units. The scales of the pangolin included such trace elements as S,Si,Fe,Al and Ca, besides the element of C,H,O and N. There were small amount of P element in the internal layer of the pangolin's scale.

结果表明冲击断口为脆性断口；穿山甲鳞片是由极细的棱柱结构单元和叠片结构单元混合形成的；穿山甲鳞片除含有大量的碳、氢、氧及氮元素外，硫、硅、铁、铝、钙5种元素的含量也相对较高，鳞片内层中含有少量的磷元素。

Objective:To study the roles of trace elements in the pathogenesis of anaphylactoid purpura.

目的：探讨微量元素在过敏性紫癜发病机理中的作用。

Metal tailings which are abundant in silicon dioxide, pyrites and trace elements have lower melting point and are favorable materials to producing cement.

金属尾矿一般熔点较低，含SiO_2和FeS_2较高，并含有丰富的微量元素，是生产水泥的良好原料。

In this paper the suit of granodiorite is prelimnarily proved to be remelt type granite in which the major rock-forming substances are derived from the crust and a few from the mantle by study on petrology, genetic mineralogy, geochemistry, trace elements, rare earth elments and isotopes combining with the re gional geological evolution and geological chronology.

此次工作，通过进一步对该套岩体的岩石学、矿物学、地球化学、微量元素、稀土元素和同位素等方面研究，并考虑了区域地质演化和地质时代等因素，基本上证明其并非幔源分异型花岗岩，也不是典型I或S型花岗岩，而是一种以地壳物质为主、地幔物质为辅的混源重熔型花岗岩。

The rich active ingredients retained work to regulate skin's functions, replenish with required trace elements and nutrients, and improves metabolism and nutrient replaceability.

充分保留植物的活性成分，调节肌肤机能，补充肌肤所需的微量元素与养分，有效增强肌肤代谢物与养分的置换能力，全面滋养肌肤，完美解决肌肤问题，令肌肤白嫩，晶莹，尊贵高雅。

This paper was very important in revealing the action mechanism of trace elements in the occurrence of cancer.

本研究对揭示癌症产生中微量元素的作用机理有着重要的意义。

In addition. it include more than 50 kinds of trace elements such as iron, manganese zinc ,Vanadium rubidium etc.

项目所在地，有大面积建设用地，黄河滩涂，绿化林带是天然氧吧，可供开发利用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。