查询词典 vadose

A series of experiments were conducted to study absorption, biodegradation and volatilization in natural attenuation of diesel pollution in sand layer of vadose zone quantitatively.

通过实验定量研究了柴油污染包气带砂层自然衰减过程中吸附、生物和挥发作用。

Keywords: vadose zone; heuristic algorithm; model; evaporation; remote sense

中文关键词：包气带，智能优化算法，模型，蒸发，遥感

Soil Vapor Extraction is a common method of removing VOCs from the vadose, or unsaturated zone, which is the area between the ground surface and the water table.

土壤的蒸汽抽提技术常用于从渗流层或水不饱和层（指处于地平面与地下水位线之间的土壤区域）的土壤中脱除可挥发性有机物。

In the article, considering the potentially severe pollution of the subsurface environment from the low level radioactive waste , the dynamic integrated transport model of low level nuclide in vadose and saturate zones has been established and is used to predict the dynamic action of the nuclide in a disposition spot.

针对处置库中低中放核素释放对地下环境潜在性污染的严重性，建立了核素在包气带和含水层中联合迁移的数值模型，利用所建立模型对某一处置场核素迁移的动力学行为进行环境预测。

The research method and principle for vadose field of confined deep water are also discussed, and the waterhead contour and hydrodynamic zoning maps are outlined for the study interval, by which flow regimes and rules of deep water are revealed in the depression.

在阐述区域地质构造和含水系统划分的基础上，论证了川西坳陷上三叠统含水系统隶属于沉积水压系统类型，提出了研究深层水渗流场的原则和方法，并根据计算勾画了研究层水头等值线图和水动力分带图，揭示了深层水的流动特点和规律

Nano-TiO2 reaches also to the vadose zone when content is lower. Cement paste admixing with semiconductor nano-TiO2 has mechano-electric effect, specific resistance changing is 7%～10%, however, that with non-semiconductor nano-TiO2 has not mechano-electric effect.

纳米氧化钛在较小掺量即可进入渗流区；金红石相纳米氧化钛水泥石不具备力电耦合效应；而复合具有半导体特性的锐钛相纳米氧化钛的水泥石具有力电耦合效应，一次加载至破坏，其电阻率变化率在7%～10%。

Increased amplitude also results in sea level falling faster than flats can subside, so that disconformities with thick vadose profiles develop.

海平面振荡幅度的增加也能造成海平面下降快于潮坪的沉降，滨线向海迁移速率比潮坪进积的速率要快得多，从而在旋回层序内发育较厚的渗流带以及不整合界面。

The paper introduces seven factor of DRASTIC model: Depth of water table、Net recharge、Aquifer media、Soil media、Topography、Impact of Vadose Zone and Hydraulic Conductivity.

介绍了DRASTIC模型的七个评价因子：地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质I的影响和含水层的导水系数。

The results show that: 1 sand-sandrock vadose zone structure ""is the critical factor for drought resistent vegetations because of its abundant moisture contents; 2. the relationship between the drought resistant plants and water table depth is not close.

认识到风积沙覆基岩型包气带结构有利于土壤水富集，是鄂尔多斯盆地北部沙蒿、沙柳等耐旱喜沙植被分布与生长的决定性因素，对维系盆地北部生态系统有重要作用；而地下水位埋深与沙蒿等耐旱植被生长间的关系并不密切。

A large amount of nitrogenous fertilizer that is not absorbed by crops or evaporated into the air is easily leached transport and accumulated in the shallow vadose zone. The accumulated nitrogen is released again and leached down into subsoils and groundwater, causing pollution. The process is mainly affected by climate, soil structure and microorganism transformation, etc.

田间施肥后，未挥发和被作物吸收的剩余N素易淋失运移，引起在浅层包气带土壤中的蓄积，且又易再释放进入下层土或地下水中形成污染，并主要受气候、土质结构、微生物作用等的影响。

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。