查询词典 properties of soil

In recent years, the technique of pipe jacking construction has been developed quickly and widely applied in water supply and drainage pipe projects in China, but it is required to study and discuss the mechanism of soil disturbance and changes of soil properties during pipe jacking.

近年来，顶管施工技术在中国得到迅速发展，并广泛应用于给排水管道工程，但顶管施工中土体的扰动机理及土体性状的变化有待深入研究与探讨。

The change of the soil moisture will lead to change of the thermotics characteristic of soil and optical properties of surface, even to the change of climate.

土壤湿度的变化会引起土壤热学特性、地表光学特性的改变，从而影响气候的变化。

Distribution characters of the soil stress and its distortion were analyzed. The interaction relation among the character, and earth parameters and timbering parameters were clarified, and properties of region and structure of overlay soil for tunneling face was posted.

全面分析了围岩的应力与变形的分布特征及其变化规律，阐明了地层变位以及应力与地层参数、支护参数的相互关系；揭示了隧道上覆地层的区域性及结构性特点。

The dynamical properties of frozen soil model are related to propagation velocity of Ultrasonic wave in frozen soil.

冻土模型的动力学性质同超声波在冻土中的传播速度有关。

According to the sensitivities of variance coefficients and relative range of soil properties, we found that nitrate, available phosphorus, labile organic matter, urase, invertase, and organic matter can be used as the assessing index, which can evaluate soil quality under various re-vegetation ecosystems in the Loess Plateau.

根据变异系数和相对极差的敏感性发现在定量评价黄土高原不同植被恢复生态系统土壤质量时，可选择硝态氮、速效磷、活性有机质、脲酶、蔗糖酶和有机质等极敏感和高度敏感土壤性质作为评价指标。

The interface wave model for two-layered viscid fluid is proposed to simulate the dynamic properties of the "water-liquefied soil-subliquefied soil" system, which is formed when certain depth of seabed is liquefied.

海床表层土体的物理参数对于整个海床的抗液化性能有很大影响，置换法是有效的防止液化的途径。

By analysis on the physical and chemical properties of rhizosphere and nonrhizosphere soils of Zanthoxylum bungeanum with soil and water conservation economic benefits in Karst valley of Guizhou province,the soil characteristics suiting Zanthoxy

文摘：测定了贵州喀斯特峡谷水保经济植物花椒根际和非根际土壤的理化性质；探讨了适宜花椒生长的土壤特性；提出了发展花椒生产的主要技术措施。

Based on the study project of groundwater environment in the middle-lower reach area of River Yangtze, to describe the background characteristics of copper in groundwater, composition of the aquiferous media, properties of overlying rock and soil, oxidation and reduction environment, conditions of runoff in groundwater and acid-alkaline numbers of groundwater and soil.

根据国家科技攻关项目长江中下游重点地区地下水环境背景值调研的研究结果，论述了长江中下游地区地下水铜元素的背景特征及其与地下水的含水介质成分、上覆岩土性质、氧化还原环境、地下水的迳流条件、地下水及土壤的酸碱度的密切关系。

Soil fertility and elucidative density are important factors affecting biological properties of field mint, such as total leaves of main stem, quantity of stem, total leaves of small stem, quantity of efficacious leaves among these properties, total leaves of small stem relieved more influence, and the degree of influence can be impressed by the ration of total leaves of small stem to main stem.

不同施肥水平与种植密度是影响薄荷生物学性状，即单株主茎叶片数、分枝数、分枝叶片数及有效叶片数的重要因素，其中分枝叶片数影响较大，可用单株分枝叶片数与主茎叶片数之间的比值反映出影响程度大小。

Based on a series of field investigation into psammophytic vegetation in Horqin sandy land and laboratory analysis of soil properties, the relationship between biodiversity and soil fertility characteristics were analyzed.

研究了科尔沁退化沙质草地不同沙漠化阶段物种多样性的变化，以及不同植被类型物种多样性与土壤肥力的相互关系。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。