查询词典 infertile soil

PART 8 : METHODOLOGY FOR PLUTONIUM 238 AND PLUTONIUM 239 PLUS 240 ACTIVITY MEASUREMENT IN SOIL SAMPLES.

第7部分：土壤样品中痄238和痄239加240活性测量的方法

When raining, pluvial current comes down into market of the labor inside channel, be absorbed by adjacent soil stage by stage.

下雨的时候，雨水流入沟内蓄集下来，逐步被邻近土壤吸收。

As mangrove grow in habitats of alternating with dry and wet and have high salt contents both in soil and sea water and lack of oxygen, as a result, mangroves have their own adaptive characteristics: such as vivipary, prop root, buttress-like root and pneumatophore.

由于红树植物生长在干湿交替，高盐和缺氧的湿地生态系统中，因此，为适应这样的环境特点，它逐渐在生理和形态上有了其适应性：如胎生，支柱根和板状根，呼吸根，树皮富含单宁等。

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。

Based on the rich historical soil and macrostructure of society, this thesis draws from the perspective of sociology on Lucien Goldmann's sociologictheory on novels-happenstantialistic structuralism, chooses structure as the key point of tangency with respect to the change of viewpoint following the sociologic imagination, andthus focuses on the interpretation of sociology on both the Chinese and Western novels by analyzing the social spirits and cultural spirits. From the standpoint of successive longitudinal happenstantialism and conexisting horizontal structuralism, the thesis also endeavors to understand and interpret the complicated relationship between novel structure and spiritual structure of sodiety from the external to the internal, thus systematically illustrates the deep relationship between novels and society.

论文将小说置于社会学视野内，立足深厚的历史土壤，依据宏观的社会构架，发挥社会学的想象力，借鉴吕西安·戈德曼"发生学结构主义"小说社会学理论，选择"结构"作为遵循社会学想象力进行视角转换的重要切入点，着重从社会精神和文化精神的层面对中西小说进行社会学的阐释；在历时纵向发生学和共时横向结构主义的视阈中，由此及彼，由表及里，"理解"和"解释"小说结构与社会精神结构间的复杂关系，进而系统地阐明小说与社会的深层关系。

Utilizing the polar angle transform, the expressions of the displacements, stresses and pore pressures of saturated soil and those of the liner in the mapping plane can be obtained.

在此基础上，将原像平面中任意形状的衬砌内外边界处的边界条件代入到映像平面中圆环势函数的关系式中，从而求出饱和土中衬砌介质在弹性稳态体波作用下产生的动态响应。

Tentativea analysis trace selenium in radix puerariae and its soil property by microwave digesion-single sweep polarograph

采用微波消解单扫描极谱法测定了葛根及其种植土壤中微量硒的含量，并做了初步分析，为葛根产品的研发提供重要依据，也为进一步开发葛根优良品种和平衡施肥提供科学信息和依据。

By means of electric potential method and anodic stripping voltammetry , the trace Cd~(2+) in the soil samples of rich iron content can be determined by a 883—model polarograph, with the mercury membrane electrode of silver base sphericity as the indicating electrode and a large area of sheet—silver electrode as the reference electrode.

本文应用电位法，采用银基球型汞膜电极为指示电极，大面积银片电极为参比电极和883型极谱仪，阳极溶出法测定大量铁存在下的土壤样品中痕量镉。

Molybdenum exists in soil and plants at very low levels. Its quantitative detection is in the range from ppm to ppb. Satisfactory results can be obtained by the use of polarography.

土壤和植株中的钼是含量很低的化学元素，定量分析检出范围是pp~m-pp~b数量级，采用极谱法分析可获得满意的结果。

The southern polder area of China has fertility soil, variegated rivers and plentiful natural resources.

我国南方圩区土壤肥沃，水网密布，资源丰富。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。