Barker noted that raising animals for food is one of the largest sources of carbon dioxide and the single largest source of both methane and nitrous oxide emissions.
巴克提到饲养动物作为食物是二氧化碳的一种主要来源，并且是甲烷和氧化亚氮排放的唯一主要来源。
He and some of his grad students wanted to use nitrous oxide as an emissions-free energy source.
他和他班上一些大学生想利用氧化氮作为无排放的动力能源。
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.
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。
The first important thin film from the thermal oxide group is the gate oxide layer under which a conducting channel can be formed between the source and the drain.
第一个重要的来自热氧化组薄膜是栅氧化层，在它之下，源和漏之间就能形成导电通道。
A weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium.
一种具有弱磁性的黑色矿物，见于变质岩和火成岩中，晶体状铁钛氧化物，是钛的来源。
The metal oxide layer may have a gradually changing metal content between the channel layer and the source and the drain.
该金属氧化物层可以在该沟道层与该源极和该漏极之间具有渐变的金属含量。
In this paper, several thin films samples of vanadium oxide were got by high-frequency Magnetron sputter with pure metal vanadium as sputter source.
本文以高纯金属钒作为靶材，采用磁控溅射工艺制备氧化钒薄膜。
Watermelons: Watermelons are a rich source of citrulline, an amino acid that can be made into arginine, which then gets converted to nitric oxide.
西瓜：西瓜里富含瓜氨酸，这是一种可以转化为精氨酸的氨基酸，而精氨酸又可以变成一氧化氮。
The invention is characterized in that the titanium source is one-dimensional nanometer titanium oxide.
其特征在于，所说的钛源为一维纳米二氧化钛。
The prepared copper oxide nanometer array can be applied to display apparatus, electric light source, electric-to-optical transducer and thermoelectric converter.
制备出的氧化铜纳米线阵列可应用于显示器件、电光源、光电转换和热电转 换器件等。
The boron compound and iodine source are combined with reactants of a fluoroalcohol and an alkylene oxide in the presence of a base.
所述含硼化合物和碘源在碱的存在下与氟代醇反应物和环氧烷烃反应物混合。
The source of antimony oxide from fuming process and its main problems existing in reducing smelting are presented in this paper.
介绍了金银火法冶炼烟尘的转炉还原熔炼试验，采用单因素试验法考察了试剂加入量、造渣时间和搅拌强度等对还原过程的影响。
The source of antimony oxide from fuming process and its main problems existing in reducing smelting are presented in this paper.
介绍了金银火法冶炼烟尘的转炉还原熔炼试验，采用单因素试验法考察了试剂加入量、造渣时间和搅拌强度等对还原过程的影响。
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