大气氮沉降已经成为红壤地区农田氮素平衡的主要输入项之一。
Atmospheric nitrogen deposition has become one of the main input items in red soil areas of farmland nitrogen balance.
从长期来说，森林植被的氮增长率与大气氮输入之间无明显的相关性。
In the long run, there is no obvious correlation between forest vegetation nitrogen increment and atmospheric nitrogen deposition.
因大气污染而不断增加的大气氮沉降量，在许多地区超过了森林生态系统的氮需求。
The increased deposition of atmospheric nitrogen due to the air pollution has exceeded the demands of forest ecosystems in many areas.
现在很容易了解获得和保持厚氮大气的条件。
The conditions for acquiring and retaining a thick nitrogen atmosphere are now readily understood.
大气中含有少量一氧化二氮。
一氧化二氮在地平面时是稳定的，但在高层大气中则分解而形成某种化合物，从而引发化学反应而破坏臭氧层。
Nitrous oxide is stable at ground level but breaks down in the upper atmosphere to form compounds that trigger chemical reactions that destroy ozone.
在这个过程中，太阳粒子会同地球大气中的氮原子和氧原子撞击并发出光芒，从而制造出类似于微型霓虹灯效果的极光。
In the process, the particles collide with atoms of nitrogen and oxygen in the Earth's atmosphere, which then glow, creating an effect similar to miniature neon signs.
综合全球各地的河流状况，估算结果表明：大气中人类造成的一氧化二氮排放至少有10%源于河流和溪流。
When summed across the globe, the results showed rivers and streams are the source of at least 10 percent of human-caused nitrous oxide emissions to the atmosphere.
虽然在地球大气层中的浓度甚微，一氧化二氮是一种很强的温室气体，而且正成为破坏平流层臭氧的主因。
Although present in minute concentrations in Earth's atmosphere, nitrous oxide is a highly potent greenhouse gas and is becoming a keyfactor in stratospheric ozone destruction.
极光的出现缘于太阳风离子与高层大气中的氧氮原子的碰撞。
Auroras happen when ions in the solar wind collide with atoms of oxygen and nitrogen in the upper atmosphere.
太阳的带电粒子与地球上层的大气相撞，促使氧和氮原子获得能量，然后以极光的形式释放出来。
Auroras occur when charged particles from the sun collide with Earth's upper atmosphere, causing atoms of oxygen and nitrogen to gain energy and then release it in the form of light.
虽然组成地球大气78%的氮是一种惰性气体，但它却有多种化学式。
Nitrogen, which, makes up about 78% of the Earth's atmosphere, is an inert gas but it has more reactive forms.
在大气层中，一氧化二氮的浓度很低，但目前科学家认为，气候暖化有6%的原因是来自一氧化二氮，而它也是破坏平流层臭氧的祸首之一。
Nitrous oxide exists at low levels in the atmosphere, yet is thought to be responsible for 6 percent of climate warming and also contributes to stratospheric ozone destruction.
开始被认为早期的地球的大气会释放氮同其他元素结合。
It was initially thought that the early Earth's atmosphere would have freed up nitrogen to bond with other elements.
大气中如果没有氧和氮，人就无法生存于地球了。
If it were not for oxygen and nitrogen in the air, no man could live on the earth.
氮是地球大气中最平常的气体，它在核电站中的主要放射性形式被叫做氮16。
Nitrogen is the most common gas in the earth's atmosphere, and at a nuclear plant the main radioactive form is known as nitrogen-16.
目前低氧水域产生的一氧化二氮占海洋一氧化二氮净产出的一半，如果这些“死水区”继续扩大，我们将看到大气中的一氧化二氮会有更加显著的增加。”
With low-oxygen waters currently producing abouthalf of the ocean's net nitrous oxide, we could see an additionalsignificant atmospheric increase if these 'dead zones' continue toexpand.
举例来说，氮可以用作化肥，但其一旦以酸的形式离开大气，就会阻碍植物生长。
For example, nitrogen can be a fertilizer, but it can stunt plant growth when nitrogen comes out of the air in acid form.
工业规模采矿、建水坝、砍伐和农业，以及大气中的碳浓度上升和海洋中的氮浓度增高都是明显的地质学标记。
The geological signal will be clear from industrial-scale mining, damming, deforestation and agriculture, as well as the concentration of carbon in the atmosphere and nitrates in the oceans.
氮循环的一个关键组成部分就是——在大气中，将纯净的氮固定为成含氮化合物的形式——这或多或少要完全依赖于生物(闪电仅起一点儿作用)。
One crucial part of this cycle-the fixing of pure nitrogen from the atmosphere into useful nitrogen-containing chemicals-depends more or less entirely on living things (lightning helps a bit).
理论上，大气中二氧化碳含量增多会使作物生长加快，实际上，还要看土壤中所含氮成分的多少。
In theory extra carbon dioxide in the atmosphere should help plants grow faster, though whether this actually happens may also depend on the amount of nitrogen in the soil.
大气中的惰性氮是无害的，但报告说主要由人类活动产生的活性氮可能危害自然界。
Nitrogen in the atmosphere is harmless in its inert state, but the report says reactive forms of nitrogen, largely produced by human activity, can be a menace to the natural world.
过去40万年，大气中一氧化二氮的变化似乎与二氧化碳大致并行，对气候的影响不大，但这可能会改变。
For the past 400, 000 years, changes in atmospheric N2O appear to have roughly paralleled changes in carbon dioxide CO2and have had modest impacts on climate, but this may change.
大气中的一氧化二氮污染通常由纤维和其他有机物质的硝化作用产生。
Nitrous oxide pollution of the atmosphere occurs usually from the nitration of cellulose and other organic materials.
烟气脱氮技术的研究已成为目前大气污染控制中的一个热点课题。
The research on NOX removal from flue gas is becoming a hot issue of air pollution control presently.
海卫一温度极低(约为- 235摄氏度，一个大气压下- 210度左右氮气凝固——译者注)，以至其大部分的氮气都凝聚到了其表面形成霜，这使海卫一成为太阳系内唯一一颗以“氮冰”为主要地表成分的星球。
Triton is so cold that most of its nitrogen is condensed as frost, making it the only satellite in the solar system known to have a surface made mainly of nitrogen ice.
氮霜，鳞纹理板，孔，是对升华和沉积模式的见证，由于稀薄的大气通过循环的扩张和崩溃。
Scaly textures in a veneer of nitrogen frost bore witness to patterns of sublimation and deposition, as the thin atmosphere breathed through cycles of expansion and collapse.
氮霜，鳞纹理板，孔，是对升华和沉积模式的见证，由于稀薄的大气通过循环的扩张和崩溃。
Scaly textures in a veneer of nitrogen frost bore witness to patterns of sublimation and deposition, as the thin atmosphere breathed through cycles of expansion and collapse.
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