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黄土

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Some rules for the dynamic characteristics of compacted loess are found.

建立了击实黄土动力特性的理论。

In recent years, with the rapid development of road construction, study on engineering properties of unsaturated and compacted loess has been more and more significant.

近几年来,随着公路建设的突飞猛进,对非饱和压实黄土工程性质的研究更具有现实意义。

But in this experiment no law is founded between angle of internalfriction and different influencing factors of compacted cement-loess.

试验得出的不同条件下夯实水泥黄土的内摩擦角与各影响因素之间未发现明显的变化规律。

The dynamic characteristic and relaxing characteristic of compacted loess have very important function in basic engineering construction.

压实黄土的动力特性和松弛特性等工程性质在基础工程建设中具有非常重要的作用。

Our study regarded Pear and Aids Apricot tree which be used to develop afforestation by water-harvesting in Semi-arid Region on Loess Plateaus as experience forest. In the case of water-retaining agent, we study the physical effect of water-retaining agent on soil water shifting balance and water use efficiency through soil-water-atmosphere conium system.

本研究以黄土半干旱区集水造林的杏树和梨树为试验林分,采取以保水剂为中心的综合保水技术,运用土壤—植物—大气连续体理论和土壤物理学理论,系统地研究了保水剂对土壤水分动态及其利用效率的影响,得到如下主要结论: 1。

Several new-style soil consolidator are introduced according to the loess properties of Guanzhong area in Shaanxi Province.

为了在渠道防渗工程中推广应用新型土壤固化剂,基於关中黄土引入了几种不同类型的固化剂。

Soil respiration response to different stages of vegetation restoration was determined via closed system measurements of carbon dioxide and selected factors affecting the correctitude and sensitivity of soil respiration. Eight different soil samples under different vegetation restoration stages were separately collected at 0~20 cm and 20~40 cm soil depth in spring and summer and both fresh and air-dried samples analyzed.

为探讨黄土丘陵区草地植被自然恢复过程中土壤微生物活性的变化特征及其影响因素,采用"时空互代"法采集宁夏云雾山自然保护区8个不同植被恢复年限的春、夏两季0~20cm和20~40cm的土样,用室内密闭静态培养-碱液吸收法测定了新鲜和风干土样的基础呼吸。

Conventional tomostatics cannot reach the reasonable accuracy in processing the data from crooked wide line geometry in Loess Tableland.

常规层析静校正技术用于黄土塬地区弯宽线资料处理难以达到合理的精度。

The project team has taken loess, lacustrine and peat sediments and tree ring as the research carrier, a systematic study has been carried on the warm phases of the different period (60-25 ka, last deglaciation, Holocene, the recent e few hundred years) and the last interglaciation on the basis of the extensive field investigation and laboratory analysis.

项目组以黄土、湖沼和树轮等沉积物为研究载体,经过大量的野外考察和实验室分析测试,对我国半干旱带末次间冰期和距今六万年以来不同时间段的温暖期(6万年到2.5万年、末次冰消期、全新世、最近几百年)进行了系统的研究,取得了一批重要的阶段性成果,确认了东亚季风气候和温暖期的不稳定性特征。

The relationship among temperature,density,matrix suction and water content was exponential.

由于非饱和黄土基质吸力的大小,取决于许多外界因素。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

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