黄土

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。

Through a plenty of data of compressal tests with a lot of samples which are different in moisture content and voids ratio , the relation between pressure,moisture content, cavity ratio and pressural modulus is disclosed in the paper,a table that is suitable for xian district is also made based on the data .

增湿变形是在压力作用下变形达到稳定后由于含水量增大而产生的附加变形，黄土地基可因水管漏水、建筑物排水不畅、地下水位上升等原因引起地基土的增湿，计算增湿变形的关键是研究土体含水量变化后引起的模量变化。

You are like a pride in place of the mountain daisy, standing in the faint howling of the twilight years.

曾经，你的身下是一方贫瘠的黄土，任人踩踏，在太阳下山的那一刻，漫漫的黑暗遮盖了一切。

In order to control the surface crack damage of huge thick collapsible loess caused by mining effectively,the distribution rule of stress-strain in top interface of the base rock and the relation of which and the surface crack were obtained using the probability integral method.

为了有效地进行采动巨厚湿陷性黄土地表裂缝损害的控制和治理，在对西部几个矿区开采地表裂缝破坏调查的基础上，应用概率积分法计算基岩顶界面的应力应变分布规律，分析其与地表裂缝的关系，研究开采引起黄土层地表裂缝产生的机理。

The objectives are achieved through test and analysis of the test results on radionuclide migration in unsaturated loess.

通过对核素在非饱和黄土中迁移实验结果的分析，达到了上述目的。

Because distribution of annual rainfall amount year by year,are cruelly nonuniform,soil water resources are basically important on the growth and development of plants.

土壤水是重要的生态水源和水文要素之一，黄土高原位于干旱半干旱地区，降水量的年际变化大和季节分配极不均匀，土壤水资源对植物生长发育的影响尤为重要。

Two experiments both of simulation under rainproof shelter and plot in field were done to study the relationship between the yield of spring corn and soil moisture in the different treatments of water supply in Non-irrigated Plateau of Loess.

采用田间遮雨棚下模拟土柱的试验方法和田间小区试验方法，对黄土旱源长武塬区不同土壤水分处理下玉米产量与土壤水分关系进行了研究。

A rainwash bed which was deposited during Late Taosi Culture was identified in DPG and LGK profile respectively.

本研究首次从临汾盆地夏文化遗址区选取全新世黄土-土壤剖面进行高分辨率环境变迁研究。

Since 1999, with the realisation of the grand reconstruction of the ecological environment with the new policy of "Defarming and Reafforestation", human settlements on the Plateau have been transformed into a brand new historical period.

目前，我国社会经济发展水平的不断增长，城镇化建设的速度加快，加之国家1999年来退耕还林生态建设的广泛实施，使得黄土高原的人居环境正面临其重要的发展变化时期。

Watson and Maurice Freedman have published articles on their study of "bone-collecting reburial", they have ignored the traditional concept of death.

而据笔者调查发现，民间道公的斋醮、对风水宝地的重视、对五色吉壤和黄土的偏好等习俗中都体现捡骨重葬俗的传统理念。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。