And, since they were created underground and not from flowing surface water, not all these passageways have an opening to the outside world.
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。
The latter two sources are limited to those few areas where surface water seeps down through underground faults or fractures to reach deep rocks heated by the recent activity of molten rock material.
后两种来源局限于少数区域，在这些区域，地表水通过地下断层或断裂往下渗透，从而接触到被近期的熔岩活动加热的深层岩石。
In 1972 UNICEF initiates a project to install tube Wells that pull pure underground water to the surface.
1972年联合国儿童基金会启动一个项目旨在打口深井并将纯净的地下水引到地表。
Hot air is drawn into the underground canal, where the water is kept cool because it is so far beneath the surface.
热空气被牵引至地下管道，那里的水因为远离地表而总是很凉。
Liquid water-which is the form life needs-may well exist underground, and may still sometimes be seen at the surface, where dried-up rivers and lakes suggest it was once commonplace.
组成生命所需的流动水可能存在于地下，可能有时仍能在表层看见，表层中干涸的河流湖泊表明流动水曾经很普遍。
Underground water reserves are much larger than those on the surface, but as they are unseen we tend to underestimate them.
地下水的储量要比地面水大得多，但是由于看不到，所以往往低估了地下水的储量。
Liquid water-which is the form life needs-may well exist underground, and may still sometimes be seen at the surface, where dried-up rivers and lakes suggest it was once commonplace.
火星地下很可能存在生命所需的液态，有时甚至在表层都能看见液态水——表层中干涸的河流湖泊表明其一度很普遍。
They evolved on the surface, but moved underground, following the natural water springs trapped in the planet's crust.
他们在地面进化，却为了找寻地壳内的天然泉水而移居地下。
The rabbet water yield includes two parts of underground water and surface water.
矿坑诵水量包括地下水涌水量及地表水汇水量两部分。
Based on static mechanism and kinetic equation of underground fluid, the model for calculating the height of the water cone with curvilinear side surface is established.
基于静力学原理和地下流体的运动规律方程，建立了底水油藏水锥体侧斜面为曲线情况下的水锥高度模型。
Change of earth pressure, pore water pressure, underground water level, surface deformation, and sub-surface movement all have direct relationship with distance between shield and testing section.
土压力、孔隙水压力、地下水位、地面变形及深层土体移动的变化都跟掘进机与测试断面之间的距离有直接关系。
The surface nuclear magnetic resonance (SNMR) technology is a method that detecting the underground water directly at surface.
地面核磁共振(SNMR)技术是目前世界上直接用来寻找地下水的技术。
In summer, when the surface of the street gets hot, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes.
夏天当路面被阳光加热后水被泵入并吸收其热量，然后再通过一根潜管将水送回地下。
These results show that the underground water has three sources, namely deep karst, shallow porous and surface waters.
结果表明，本区地下水有三个来源：深部喀斯特岩溶水、浅部孔隙水和地表水。
Ground water is different from surface water, therefore the groundwater pressure applied on underground structure is decided by soil structure.
地下水不同于地表水，其作用到地下结构上的外水荷载受到土体结构性的影响。
The total hardness, sulfate, chloride and consumption oxygen quantity in mixing water , underground water and surface water existed significant difference(P<0.01).
其中，混合水、地下水、地面水总硬度、硫酸盐、氯化物、耗氧量四项指标有显著差异（P<0.01）。
Tourism industry is one of the main users of surface and underground water.
旅游业是地表水和地下水的主要使用者之一。
Where underground water comes to the surface, there are oases.
地下水流到地表的地方，就成为了绿洲。
Establishing water conservation irrigation garden by irrigated area itself is a new attempt on unified management and comprehensive utilization of the surface water and underground water.
由灌区自行建立节水灌溉园区是灌区地表水、地下水统一管理和综合利用的新尝试。文章就其中的有关问题进行了探讨与研究。
But due to the influence of the structural activities and weathering in the surface, under the action of underground water, the ore types and the preservation of ore seam showed obvious zoning.
但由于构造活动及地表风化作用的影响，矿层在地下水的作用下，其保存情况及矿石类型形成了明显的分带性。
Water filling sources of underground mine in Pingshuo mining area have Quaternary pore water, surface water, Permo-Carboniferous sandstone fissure water and Ordovician limestone karstic fissure water.
平朔矿区井工矿井的充水水源有第四系孔隙水及地表水、石炭—二叠系砂岩裂隙水、奥陶系灰岩岩溶裂隙水。
Main disasters of resource-exhausted cities are underground disaster, ground surface disaster, water environmental disaster and atmospheric environmental disaster.
资源枯竭城市灾害主要为地下、地表、水环境和大气环境灾害。
The application result showed that the model can realize conjunctive use of surface water and underground water in deed and improve water resources use efficiency.
实例计算表明：应用此模型指导井渠结合灌区的水资源配置可实现真正意义上的地表水和地下水联合运用，提高水资源利用效率。
The features of Surface Nuclear Magnetic Resonance(SNMR) signal for underground water and the sources and characters of the spike noise distortion are analyzed.
首先分析了地面核磁共振信号的特征和奇异噪声的来源与特点，提出了相应的消除方法并进行了仿真研究。
The harmfulness of aluminium industrial residue deposit on environment mainly lies in its pollution of underground water and surface water.
铝工业废渣堆场对环境的危害主要表现在对地下水及地表水体的污染，其主要污染物为碱、氟化物、铝及钠等。
This paper analyzes the surface water and underground water pollution status quo and pollution ways in Nenjiang valley.
对嫩江流域的地表水、地下水污染现状、污染途径进行了分析。
Drainage of the foundation pit formed the landing funnel of underground water which induce rocky surface collapse;
基坑排水形成地下水降落漏斗，诱发岩溶地面塌陷；
A numerical simulation case study is used to demonstrate the drainage effects on underground tunnel, the groundwater table changes caused by surface water infiltration and anti-sliding piles Settings.
基于工程滑坡实例研究，利用数值模拟，揭示了滑坡治理工程中地下排水洞的排水效果，分析了地表水集中入渗和设置抗滑桩后地下水渗流场的变化特征。
Residual material of atrazine was founded in the surface water, underground water, and atmospheric sedimentation, and it resulted in the global ecological influences.
在世界许多国家及地区的地表水和地下水中以及大气沉降物中检测出了阿特拉津的残留物，它对生态环境的影响具有全球性。
Residual material of atrazine was founded in the surface water, underground water, and atmospheric sedimentation, and it resulted in the global ecological influences.
在世界许多国家及地区的地表水和地下水中以及大气沉降物中检测出了阿特拉津的残留物，它对生态环境的影响具有全球性。
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