Correct selection of source gases and their compositions is one of the critical factors for si trench etching.
源气体及组分的选择是硅槽刻蚀技术的关键因素。
Our use of fossil fuels is the main source of excess greenhouse gases.
我们对化石燃料的使用是温室气体过量的主要来源。
It is home to the world's biggest coal company and an industrial-scale experiment to turn coal into diesel that could create a major new source of greenhouse gases.
这里拥有世界上最大的煤矿公司，并在进行一项能将煤变成柴油的工业规模试验，柴油可能成为又一种温室气体的主要来源。
Direct emissions of methane from cows and pigs is a significant source of greenhouse gases.
直接来自于牛和猪的甲烷排放是温室气体的重大来源。
There's also further research suggesting that fertiliser used to grow biofuels can also be a significant source of greenhouse gases.
还有进一步的研究表明，用于种植生物燃料的肥料可能是温室气体的巨大来源。
This always surprises people, but the global food production system is a really important source of carbon dioxide and other greenhouse gases.
这说来总是令人诧异，但事实上，全球的食物生产是二氧化碳及其他温室气体排放的一个重要来源。
In one of the houses where the gases had been detected, the chemists' search for the source had led them to the basement.
从一间被检测出这种气体的房间里，化学家搜寻到了位于地下室的源头。
Nuclear power is the only abundant energy source we have that emits nearly no greenhouse gases.
核能是已知的充足无污染的能源，几乎没有任何温室气体排放。
Buildings are responsible for about half the world's emissions; domestic housing is the most important single source of greenhouse gases.
建筑物释放的气体占了全世界排放总量的一半，民用住房是温室气体的一大重要来源。
The frozen soils of the far north are already changing—from a tremendous storehouse of greenhouse gases to a tremendous source.
最远的北方冻土区也开始有了变化，从最大的温室气体储藏室变成了最大的温室气体源头。
The company has tested its source particles in the lab, using a vacuum chamber and hot gases to simulate the conditions the pellets would encounter upon re-entering Earth's atmosphere.
这家公司已经在实验室里测试了源粒子，使用了一个真空房间和高温气体来模拟小球进入地球大气层的情况。
But that leads to more and more questions about the source of all the gases and things needed for the explosion.
但是那样的说法带来越来越多的问题，大爆炸所需要的气体是从哪里来的呢？
China is building a new coal-fired power plant every week and is set to surpass America as the biggest source of greenhouse gases within a year.
中国每周都要新修建一个烧煤的发电厂，将在一年内超过美国成为世界上最大的温室气体来源地。
In spite of a lot of studies on the source and sink of greenhouse gases reported, the different researches get different or even contrary conclusions.
尽管目前国内外对主要的温室气体源与汇研究报道很多，但不同的研究结果不尽一致，有些研究间甚至出现相反的结论。
Coal is the most polluting major source of electricity in terms of emissions of climate-changing gases, while nuclear power is one of the cleanest.
火力发电所用的煤是温室气体的主要产生原因，相比之下核能是最清洁的能源。
The influences of source structure and reactive gases on delivered beams were investigated and the related results were achieved.
研究了源结构和引束上活性气体的影响，并获得有关结果。
Peatland is a large carbon reservoir, which can act as a source or sink of greenhouse gases.
泥炭地是一个巨大的碳库，是温室气体的源或汇。
Cars are a major source of greenhouse gases.
汽车是引起温室气体排放的一个主要来源的。
Forest soil is the important source and sink of greenhouse gas in atmosphere. The main greenhouse effect gases, such as CO2, CH4 and N2O, are related to this system directly or indirectly.
森林土壤是大气温室气体重要的源和汇，主要的温室效应气体CO2、CH4及N2O都直接或间接与这个系统有关。
Rwanda plans to turn dangerous gases dissolved in Lake Kivu into a major energy source.
卢旺达正在计划将溶入基伍湖中危险气体转换成主要的能源供给。
High voltage pulsed electrodeless discharge in rare gases can be used as a light source for laser excitation.
高电压无电极强脉冲气体放电，可以用作激光器的激发光源。
As that plan unfolds, shutting down a source of low-emission power, Germany's notable success in cutting greenhouse gases has stalled.
随着这一计划的实施，清洁电能的一个来源将被切断，德国在温室气体减排方面取得的令人瞩目的成绩已经停滞不前。
The source of the certification uncertainty of multi-component calibration gases in nitrogen was analyzed. The uncertainty is less than 3%.
分析了重量法制备氮中多元标准混合气体定值不确定度的来源，其定值的扩展不确定度小于3％。
The mass spectrometer includes an ion source to ionize trace gases, such as helium, a magnet to deflect the ions and a detector to detect the deflected ions.
质谱仪包括使诸如氦之类的示踪气体离子化的离子源、偏转这些离子的磁铁以及检测这些偏转离子的检测器。
Carbon dioxide emissions are the primary source of greenhouse gases.
二氧化碳的释放是温室效应气体的主要来源。
Carbon dioxide emissions are the primary source of greenhouse gases.
二氧化碳的释放是温室效应气体的主要来源。
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