Ideally, a large proportion of rainfall should be absorbed by the ground. Clearly, such a process is not possible on a hard surface.
大部分降雨理论上应该被地面吸收，对硬地面来说显然不行。
In this method of farming seeds and fertilizer are put into the soil through small cuts made in the surface of the ground.
在这种耕作方法中，种子和肥料是通过地面上的小切口进入土壤的。
Most ground surveys involve a lot of walking, looking for surface clues such as small fragments of pottery.
大多数地面调查都需要走很多的路，寻找一些表面上的线索，比如陶器的小碎片。
This article covered a lot of ground in a short space, and frankly, it only scratched the surface of what these two outstanding libraries have to offer.
本文在有限的篇幅内涵盖了很大的范围，坦白地说，这仅仅触及到这两个重要库的表面。
How do archaeologists know where to find what they are looking for when there is nothing visible on the surface of the ground?
地面上什么也看不见，考古学家怎么知道到哪里去找他们要找的东西呢？
The underground mine emergency refuge principle was provided. The surface ground would be the most safety and the personnel in emergency should be quickly and safely back to the surface.
提出了煤矿井下紧急避险原则：地面最安全，遇险人员应尽快安全撤至地面。
Surface subsidence (ground depression) caused by the overuse of ground water.
过度抽取地下水引起的地面沉降。
Arc Burns. Localized points of surface melting caused by arcing between electrodes or ground and pipe surface.
电弧烧伤。由于电极(含接地极)与管子表面之间起弧而产生的局部表面熔化点。
Most of the theoretic formulas to calculate the ground surface roughness are based on the geometrically generating interaction between grits and workpiece surface.
大多数计算磨削表面粗糙度的理论公式都是基于砂轮表面磨粒与工件表面的几何创成机理建立的。
Anomodonts lived both on the surface of the ground and in trees.
异齿兽类生活在地面和树林中。
But on a hillside that means the wind (which tends to follow the ground when it is close to the surface) hits the blades of the turbines at an Angle, instead of face on.
但由于近地面风风向会跟随地形变化，在山坡，这便意味着风会以一定角度撞击涡轮，而不是正面撞击。
Traditional geothermal plants exploit natural systems in which water seeps down into porous rocks in the ground and emerges back at the surface at a high temperature.
传统的地热发电厂利用了这样一种自然系统，即水分下降至地壳的渗透岩层中，而后又受热蒸腾到地表。
On or above the surface of the ground.
在地上的或在地表以上的。
A huge amount is in polar ice, which adds up to 1.7 per cent. A further 1.7 per cent lies in ground water deep beneath the land's surface.
有大量的淡水存在于两极的冰盖中，占到水总量的1.7%，还有1.7%是地下水。
Under cloudless skies, the surface gives up its moisture, making the ground level hotter and drier while not increasing the chances of rain.
在万里无云的天空下，地表水分蒸发，使地表更热、更干燥而无法增加形成雨的机会。
There is much more freshwater stored in the ground than there is in liquid form on the surface, according to the USGS.
根据美国地质调查局，更多的淡水储存在地下，其数量多于在地球表面上以液体形式所呈现的水。
Float glass and surface ground or polished glass, in sheets, whether or not having an ab - sorbent, reflecting or non-reflecting layer, but not otherwise worked.
浮法玻璃板、片及表面研磨或抛光玻璃板、片，不论是否有吸收、发射或非反射层，但未经其他加工。
Typically it involves drilling wells to pump steam into the ground to melt the bitumen and make it easier to suck up to the surface.
典型的工艺是先钻井，然后通过井眼将蒸汽泵入地下，油砂中的沥青被蒸汽熔化，这样便容易被抽吸至地面。
At the earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground.
在地球的表面，地震会使地面发生震动，有时则会发生地面移动。
It is shown that underground group cavities significantly amplify the surface ground motion nearby.
数值结果表明，地下洞室群对附近地面运动具有显著的放大作用。
When we withdraw into underground dwellings, the surface ground now occupied by cities can be turned over to park and to wilderness for recreation.
当我们撤到地下居所时，现在由城市占据的地面便可让位于公园和荒野，供人们休闲娱乐。
Doctor said that sinkholes are created when the ground collapses into a void beneath the surface.
多科特说，地陷是由地表陷入地下空洞造成的。
In certain areas, mainly near airports, controlled airspace extends down to 215m above the ground, and, in the immediate vicinity of an airport, all the way down to the surface.
在某些区域（主要是机场附近），受管制的空域一直延伸到距地面215米之上，而且在紧邻机场的区域，控制区域一直延伸到地表。
This enables them to avoid the worst rigors of high winds and permits them to make use of the higher temperatures immediately adjacent to the ground surface.
这种特点使它们能够避开最严酷的狂风，并且使它们能够利用紧挨地表的更高温度。
However, the displacement and deformation of surface ground by underground mining have destroyed initial equilibrium between the building and the ground.
但是由于地下开采引起地表产生的移动和变形，破坏了建筑物与地基之间的初始平衡状态。
The effects from earthquakes are caused by ground shaking , surface faulting , ground failure, and less commonly, tsunamis .
地震的影响主要由地动、地质断裂、地面塌陷和极少数情况下出现的震后海啸引起。
Under cloudless skies the surface heats and gives up its moisture, making things at ground level hotter and drier while not increasing the chances of rain.
这块万里无云的天空下，地表温度上升、失去水分，从而造成地面上的物质越变越热、愈加干燥，但降雨的机会却丝毫未增加。
The surface of the ground can sink if hot groundwater is withdrawn without being replaced.
如果抽取地下热水而又不将其泵回，地表就会下沉。
Excess water at the surface is siphoned down to replenish ground water, which is then pumped back up for use as necessary.
地表多余的水被虹吸下去，用于补充地下水，然后地下水被重新抽上来用于必要的用途。
Excess water at the surface is siphoned down to replenish ground water, which is then pumped back up for use as necessary.
地表多余的水被虹吸下去，用于补充地下水，然后地下水被重新抽上来用于必要的用途。
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