第三天，土地形成，地下的水流上形成干燥地带。
On day three, land is formed to make dry spots from the waters below.
并且，由于它们是在地下形成的，而不是由地表水流形成，所以并不是所有的通道都有通向外部世界的开口。
And, since they were created underground and not from flowing surface water, not all these passageways have an opening to the outside world.
在气候特别湿润的年月里，平常干涸的河床下游可能会有水流动，因为地下水在那里位抬升到了地表以上。
In particularly wet years, short stretches of an otherwise dry stream-bed may have flowing water because the water table rises to intersect the land surface.
在新研究的基础上，他认为这种隔离并不是经常发生并且还有可能决定于沉积物的构成和地下水流动的复杂性。
On the basis of the new study, he thinks that such sequestration may not always happen and probably depends on the composition of sediments and the complexity of water flow underground.
典型的解决方法是建造更大直径的排水管和巨大的地下水箱来容纳过量的来水，直至下水管网能够自行处理水流。
The typical solution is for a city to build larger pipes and a giant underground tank to hold the excess water until sewers can handle the flow.
这个塌方的污水池是由于雨水和地下污水流动造成的。
The sinkhole was caused by rains and an underground sewageflow.
地下水流的流动会使得沙粒积累，并使得表面变得粗糙，从而颜色更深。
A subterranean flow of briny water could rearrange sand grains or alter surface roughness in a way that darkens its appearance.
95%以上的水最后流入海洋中，作者说，大量地下水流入海洋，成为海平面上升的重要因素。
More than 95 percent ends up in the ocean, the authors say, where the quantity of groundwater reaching the sea is making an important contribution to sea level rise.
一些屋顶排水沟的挡板式设计打破了排水水流交换落水管，所以它不会削弱地下。
Some roof gutter exchange downspouts for baffle type designs break up the stream of drained water, so that it does not erode the ground below.
水文工作者很关心地下水流问题的求解。
Hydrologists are often interested in the solution of subsurface-flow problems.
当挖方位于天然地下水面以下时或有地下水流经时，排水就成为一个主要的工序。
Dewatering becomes a major operation when the excavation lies below the natural water table and intercepts the groundwater flow.
压实流盆地被认为是具有离心流模式的地下水流系统。
Compaction driven flow basins are believed as existing typical centrifugal flow regime of underground water.
本文介绍了一种求解地下水流问题的有限分析法，该方法将解析解结合到数值方法中，从而提高了计算精度，改善了稳定性。
This paper introduces a finite analytic method of solving groundwater flow. This method combines analytic solution with numerical method, and can rise computational accuracy and improve the stability.
采用一维非恒定流方程模拟地下排水管网内的水流，并给出泵站、闸门、淹没出流管道等排水系统的处理方法。
The flow in the drainage pipe network is simulated by one-dimensional unsteady flow theory, and the calculation of the pumping stations, the water gates and submersed pipes is indicated.
在此基础上建立了对地下水流场进行预测的数值方法。
A numerical medel for groundwater table forecast was developed, then.
根据非均匀各向异性地层的非稳定的地下水流动模型，采用有限差分法求解，可以定量判断油气运移的方向及强度。
According to geologic model of unsteady groundwater flow in heterogeneous medium and adopting the finite difference solution, the direction and strength of oil gas migration can be quantified.
在此基础上建立了对地下水流场进行预测的数值方法。
Then a numerical model for groundwater table forecast was developed.
地下水流是水于地下蓄水层或地下水位线以上的空间流动。
Subsurface flow is the flow of water underground, in the vadose zone and aquifers.
这跟地下深处那股水流的沸腾方式有关。
此外，由于减少了污染的天然水流，它变得难以热泵与地下水交换建筑热。
Also, as fouling decreases the flow of natural water, it becomes difficult for the heat pump to exchange building heat with the groundwater.
该模型是一种地下水流系统水均衡模型和线性规划模型的耦合。
This model is made up of the water balance model of the groundwater flow system and the linear programming model.
利用该模型计算了地下水可开采量及地下水流场和地面沉降的预报。
It can be used to forecast the groundwater flow, land subsidence and the workable reserves.
本文分析了河水与地下水不同作用形式下的补排关系，给出了河流在地下水流模拟中的两种处理方法。
The article analyzes the relation between recharge and discharge under the different function of groundwater and stream and given two treated methods for stream in groundwater flow simulation.
气体逸出可引起地下水流量、水位和温度的显著变化。
The gas spilling can make notable variation of the groundwater flow, water level and temperature.
而在钻孔测量温度时，由于地下水流动的影响，钻孔温度曲线将发生异常变化。
Moreover, influenced by the movement of groundwater, there will be abnormality in temperature distribution curve in borehole.
地下水流到地表的地方，就成为了绿洲。
Where underground water comes to the surface, there are oases.
针对地下水流模拟结果类型，研究地下水流模拟结果可视化表达的方式。
Finally, aiming to the simulation result type of groundwater flow, the visualization expressing fashion about groundwater flow simulation result is researched.
在讨论这个问题时，又考虑进了排水沟中的水位也是随时间而变化的，因此在地下水流动过程中的任一瞬时，其地下水头差也是一个变量。
In the meantime the time variation of the water level in the ditch has been taken into account, therefore the groundwater head are time-varying as the groundwater flows toward the drain system.
在讨论这个问题时，又考虑进了排水沟中的水位也是随时间而变化的，因此在地下水流动过程中的任一瞬时，其地下水头差也是一个变量。
In the meantime the time variation of the water level in the ditch has been taken into account, therefore the groundwater head are time-varying as the groundwater flows toward the drain system.
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