During overlying rock strata being fractured, the surface gas drainage boreholes may be damaged due to ground movement.
在长壁工作面通过的过程中，地面垂直钻孔可能随岩层移动而发生破坏。
Test results of surface gas extraction technology from boreholes in the goaf in Zhangbei Coal Mine, Huainan Mining Group are introduced in the paper.
本文介绍了淮南矿区张北矿地面钻孔抽采采空区瓦斯技术的试验成果。
This paper elucidated the theoretical basis for controlling the fluidization parameters by calculating the SGV surface gas velocity in he LLDPE reactor.
通过对LLDPE聚合反应器表观气速(sgv)值的计算，为流化参数的控制提供了理论依据。
By using this method, the damage of surface gas drainage holes caused by induced excessive mining displacement can be effectively reduced if not being avoided.
采用提出的计算方法可避免由于受采动影响对地表瓦斯抽放钻孔引起的过大变形及其所造成的破坏。
On the other hand, a comparatively warm body with a small surface gravity, like Earth's moon, is unable to hold even the heaviest gas and thus lacks an atmosphere.
另一方面，像地球的卫星这种相对温暖、表面引力较小的天体，它们连最重的气体也无法容纳，因此也没有大气层。
Below a certain threshold, they will not be strong enough to overcome the convective mixing of the gas at the surface, and spots will disappear altogether.
低于一定的临界值的话，它们将不足以克服表面气体的对流混合，因而太阳黑子将完全消失。
If a binary includes a White Dwarf, gas pulled from a companion onto the White Dwarf's surface can fuse violently in a flash called a nova.
如果一个双星系统包含一个白矮星，从伴星上抽离的气体会落在白矮星的表面，在一瞬间引发猛烈的聚变反应，即新星。
The gas would have the dual effect of choking air-breathing animals and preventing sunlight from reaching Earth's surface.
这些有毒气体不仅会使动物造成了窒息，而且对照射到地球表面的阳光产生了严重阻挡。
Rising concentrations of these gases are then analysed in order to draw conclusions about the amount of gas being given off by a given surface area.
然后对这些气体的浓度增升进行分析，以得出某个给定表面区域所释放的气体量。
Another way to store hydrogen is to put something inside the tank which increases the total internal surface area to which the molecules of the gas can cling.
储存氢的另一方法是在燃料箱中放点东西，增加氢分子能够附着的内表面总面积。
Even the surface waters of the ocean contain substantial amounts of this gas. But where that Marine methane comes was a mystery, Until now.
科学家甚至发现海洋表层海水也含有相当多的甲烷，但其来源之谜迄今仍不得其解。
A solar prominence is a cloud of solar gas held just above the surface by the Sun's magnetic field.
日珥是被太阳磁场束缚太阳表面之上的气体云。
Expose the surface of the ocean to an atmosphere with ever more carbon dioxide, and the gas and waters will produce carbonic acid, lowering ph on a planetary scale.
要是海洋的表面与含更高二氧化碳的大气层接触，那么水和气会产生更多的碳酸，在全球范围内降低PH值。
In deep water, methane gas oxidizes into carbon dioxide before it reaches the surface.
在深水中，甲烷气体到达水面之前就会氧化为二氧化碳。
When thick magma and large amounts of gas build up under the surface, eruptions can be explosive, expelling lava, rocks and ash into the air.
当厚厚的岩浆和气体大量在地表下聚集起来，就会出现爆炸性喷发，将熔岩，岩石和火山灰喷向空中。
European governments could step up to this challenge, since they are tied to Libya via gas pipelines that float beneath the surface of the Mediterranean.
欧洲各国可能将面临利比亚局势方面的挑战，因为地中海下的天然气管道使其与利比亚紧密相连。
Allen also may order BP to open the cap and let oil and gas flow via pipelines to vessels on the sea surface where it will be separated, stored and burned.
艾伦可能还会命令BP打开控油罩让油、气流通过管道输送到海面的舰船以便他们在那里能够被分离、储存和焚烧。
Once at the surface, the gas and oil was diverted directly onto the oil rig, where it ignited and exploded.
浮在海面的天然气和石油直接流到油井上，并在那里开始燃烧并爆炸。
NEW HAVEN, W.Va. — Poking out of the ground near the smokestacks of the Mountaineer power plant here are two wells that look much like those that draw natural gas to the surface.
纽黑文——美国“登山者”发电厂外面的两个大烟囱附近有两口井伸出地面，看上去好象是用来提取提取地面下的天然气。
The researchers say the dead creatures probably are floating to the surface rather than sinking because they have absorbed gas bubbles as they filtered water for food.
研究者说尸体更有可能上浮到海面而不是沉入海底，因为在它们进食过程中他们吸收了天然气。
One idea being tested is using a thin foil surface covering, a gas or vacuum blanket, to keep the heat out.
一个创意正在试验阶段，即在墙面上复上一层薄薄的铂片，再用一张充满气体或真空的毯子来隔热。
With Eyjafjallajokull, pockets of hot gas blasted through the surface of the lava, generating shock waves that can be seen passing through the grey smoke of the volcano.
在埃亚非德拉火山爆发中，热气团冲破熔岩表面，产生的冲击波可以穿破灰色的火山灰烟尘。
By tracking this ratio over time, he can determine how long gas has taken to reach the surface and gain clues to the chemical, thermal, and mechanical state of the rocks the gas is passing through.
通过追踪该比率随时间的变化，他可以确定氡气到达地表需要花费多长时间，同时获得气体所通过的岩石的化学、热力学和机械状态。
Deforestation causes around fifth of greenhouse gas emissions every year, more than all the forms of air and surface transport combined.
砍伐森林每年导致约五分之一温室气体排放，高于所有形式的航空和水陆运输排放量的总和。
Earth is right for life because of its gas atmosphere, surface water and moderately warm temperatures.
地球最适宜于生命的存在，因为地球有大气层、地表水和适宜的温度。
Drillers have combined old technologies into new methods of extracting this natural gas from the previously untapped soft rock layer a mile or more beneath the surface.
在原有的钻井技术中加入新方法后，天然气可以从离地表一英里甚至更深的未曾开发的柔软岩层中被开采出来。
Drillers have combined old technologies into new methods of extracting this natural gas from the previously untapped soft rock layer a mile or more beneath the surface.
在原有的钻井技术中加入新方法后，天然气可以从离地表一英里甚至更深的未曾开发的柔软岩层中被开采出来。
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