含水层

In the process of excavating the foundation pit and tunnel of the subway, it isdifficult to deal with the perched water, the saturated water in the aquiclude, as wellas the remaining water on the aquifer surface.

在地铁基坑和隧道开挖施工过程中，会经常遇到弱透水性的饱水层，这些地层在开挖后会出现侧壁渗水和在含水层界面形成残留水，会对隧道的整体稳定产生一定的影响。

The objective of this study was to compare and differentiate the different removal mechanisms of the dissolved organic matter in the secondary effluent during the granular activated carbon adsorption, horizontal subsurface flow wetland treatment, sand column treatment, laboratory-scale soil aquifer treatment and GAC+SAT.

通过模拟活性炭吸附、砂柱处理、土壤含水层处理、GAC+SAT及潜流式人工湿地处理实验，研究了城市污水处理厂二级出水中溶解性有机物在吸附、生物降解及生物与吸附的共同作用等具有不同DOC去除特点的处理过程中的去除及转化机制。

The tracer migration that the tracer concentration continuously injecting into semi-infinite sand column(initialization velocity is zero) and the pollutant continuously enter into aquifer through a discharging well that completely enter into the dive aquifer are two representative groundwater pollution problems ,Then this paper respectively sets above two decided solution problems and the union simulation problem of groundwater and solute as examples, from the question description, the mathematical model selection and determination, the parameters selecting to carry on the value computation, the read-write of attribute data , visualizes by the IDL programs, carries on the numerical simulation and the visualization post-processing to the above groundwater pollution problems, and according to the numerical solution and the solute migration curves, briefly analyzes and predicts the temporal and spatial distribution features and distribution range of contaminant concentration.

然后分别以半无限长沙柱中连续注入示踪剂浓度的运移、污染物通过一完全进入潜水层的排放井连续进入含水层这两个典型地下水污染定解问题及地下水流和水质联合模拟问题为例，从问题描述、数学模型选取确定、参数选取到运用IDL编程进行数值计算、属性数据读写、可视化，对上述地下水污染问题进行数值模拟和可视化的后处理，并根据数值模拟的数值结果和溶质运移曲线，对污染物浓度的分布范围及随时空变化趋势作了简要分析预测。

This course covers sediments in the rock cycle, production of sediments at the Earth's surface, physics and chemistry of sedimentary materials, and scale and geometry of near-surface sedimentary bodies, including aquifers.

本课程涉及到岩石循环中的沉积物，在地球表面沉积物的产生，沉积物的物理和化学性质，和近地表沉积体的规模和形状，包括含水层。

By taking advantage of the features of the discrimination between two resources that still has a better result even if the sample amount is small,the discriminants are established.

在新区矿井样本少的条件下，多类判别的问题一直难以解决，特别是发生过突水淹井的煤矿，各含水层的地下水有了一定的混合，判别水源就更为困难。

The hydrologists often use a graphical or numerical method to analyze pumping test data for estimating aquifer parameters based on the homogeneity assumption.

过去在检定地下水含水层的参数，大多利用抽水试验，再以图解法或数值方法来分析泄降数据以推求参数值，但这些方法皆假设水层为均质。

Tears are formed in several glands around the eye. The water layer is produced in the lacrimal gland, located under the upper eyelid.

眼泪是由眼球周围的几个腺形成的，含水层是由位于上眼睑的泪腺产生的。

Equiprobable hydraulic conductivity fields were reproduced using geostatistical methods to assess the spatial uncertainty of the heterogeneous aquifers. The flow and reactive transport models then simulated contamination plume migration stochastically after inverse calibration. A contamination potential front of the nitrogen compounds based on a 95% risk probability was compared with a deterministically simulated contaminant distribution.

经过水流及反应传输模式之相关参数校正后，序率模拟异质含水层地下水水流与氮化合物传输，针对某些污染门槛浓度，机率分析硝酸盐氮与铵氮污染分布，以代表污染风险机率及污染潜势，建立95％风险机率为污染潜势之锋面，该锋面分布与定率污染传输模拟结果比较。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。