空气中存在的无色微量气体。
A colorless gas that is present in the air in trace amounts.
在微量气体代谢中，土壤微生物具有直接的作用。
Soil microorganisms exercise direct effects on trace gases metabolism.
该方法解决了已有同位素稀释质谱法在微量气体定量分析中的难题。
The new method overcomes the limitations of established methods of IDMS in the quantitative analysis of trace gas.
这些微量气体除了在污染最严重的大气外，是不能凭嗅觉察觉到的。
These trace gases are not detectable by smell in any but the most heavily polluted atmosphere.
差分光学吸收光谱法已经变成了测量大气中微量气体浓度常用的方法。
Differential optical absorption spectroscopy has become a widely used method to measure trace gases in the atmosphere.
光声光谱法是基于红外吸收光谱原理的一种高灵敏度的微量气体探测技术。
Photoacoustic detection of trace concentrations of gases is one of the most sensitive techniques of infrared Absorption spectroscopy.
氧化亚氮、甲烷是大气中重要的微量气体，对全球变暖和大气化学有重要作用。
N2O and CH4 are important atmospheric trace gases, which play significant roles in the global warming and atmospheric chemistry.
本文介绍了上海电子束离子阱(EBIT)装置微量气体注入系统的成功研制。
The gas injection system for Shanghai electron beam ion trap (EBIT) facility is successfully developed.
为了进行这一考察，探测器近期开始测量从金星散逸的一些微量气体，尤其关注的是氢和氧。
To do this, the spacecraft recently began taking measurements of some of the trace gasses being given off by Venus, looking specifically for hydrogen and oxygen.
减少二氧化碳排放是防止地球大气层受到对气候有影响的微量气体之影响的一种努力。
A reduction in carbon dioxide emissions in one of the key elements of endeavours to protect the earth's atmosphere from trace gases which affect the climate.
差分光学吸收光谱法(DOAS)已经成为测量大气中微量气体浓度广泛应用的方法。
Differential optical absorption spectroscopy (DOAS) has become a widely used method to measure trace gases in the atmosphere.
在用CO激光监测大气微量气体或污染气体时，必须根据实际大气状况，进行必要的水汽订正。
When monitor trace gases of the atmosphere or pollution gases by means of co laser, one must correct for water vapor attenuation according to the actual condition of the atmosphere.
结果表明：在气溶胶含量较高的气层内，气溶胶表面的非均相反应对气溶胶与微量气体的关系有重要影响。
The result suggested that stratospheric heterogeneous processes on aerosol surfaces is important for the relation between aerosols and trace gases in the aerosol-enriched layers.
这些观测系统对微量气体、气溶胶、挥发性有机物、温室气体、太阳辐射、干湿沉降、气象要素等进行连续观测。
Through this system, trace gases, aerosol, volatile organic components, greenhouse gases, solar radiation, dry and wet deposition and meteorological elements can be observed continuously.
根据实验参数进行了符合效率计算，该实验方法可用于微量气体元素甚至同位素的绝对含量分析，较单独的飞行时间谱更加可靠。
The coincidence efficiency was investigated. This measurement can be used to analyze absolute content of gas atom, even of isotopes. This method is more reliable than the Time-Of-Flight spectra.
在碳- 14散布到全球之后，微量的这种气体被缓慢生长的苔藓吸收。
Find a good description of the dating process here. After carbon-14 spread throughout the globe, tiny amounts of the gas were taken up by the slow-growing mosses.
化石发掘和微量元素分析表明，热河生物群经历了集群死亡和快速掩埋，火山活动的有毒气体是生物灾难事件的主要因素。
Excavation and trace element analysis indicates: Jehol biota experienced mass mortality and rapid burial; toxic gases of the volcanic activities are the main factors of biological catastrophic event.
上周在华盛顿一个语气强硬的演讲中，斯特恩先生表示，如此微量缩减将无助于影响改变气候气体的大气浓度。
In a tough speech in Washington last week, Mr. Stern said that such modest reductions would do little to affect atmospheric concentrations of climate-altering gases.
本文研究了人工嗅觉系统在室内微量污染气体的浓度检测方法。
This paper did research work for the method of inspection of these polluted gases by artificial olfaction system.
用于硫酸生产二次转化进出口气体中微量二氧化硫含量的测定，效果较好。
It's used to measure micro sulphur dioxide of gases at the inlet and outlet of the second stage conversion in sulphuric acid production with satisfactory results.
文中介绍了气体电离探测器，固体、气体闪烁计数器，半导体探测器以及量子微量热器等方面的国外近年进展简况。
The recent progress in gas ionization detectors, solid and gas scintillator counters semiconductor detectors and quantum microcalorimeter abroad are described in this paper.
脱氧剂用于脱除气体中的微量氧气以提供含氧量极微的高纯气体。
Deoxygenate was used to remove the remanent oxygen from gas for supplying the high purity gas.
还测定了气体中的微量O2对CO的动态吸附的影响。
The effect of little O2 to the dynamic adsorption of CO was studied too.
介绍了氮中微量氧标准气体在研究过程中稀释气体高纯氮中氧分析不确定度的评价依据，给出了评价过程和结果。
The analysis method was introduced for micro-oxygen in nitrogen calibration gases in this paper, at the same time we have definited the suitable analysis conditions and precision.
最后对工质CO_2夹带的微量PAG对压缩机、膨胀机、气体冷却器和蒸发器的性能影响分别进行了分析，并提出了超临界换热分析模型。
The effects of little of lubricant in CO_2 on the performance of compressor, expander gas-cooler and evaporator were analyzed, and the model of supercritical heat transfer was also proposed.
最后对工质CO_2夹带的微量PAG对压缩机、膨胀机、气体冷却器和蒸发器的性能影响分别进行了分析，并提出了超临界换热分析模型。
The effects of little of lubricant in CO_2 on the performance of compressor, expander gas-cooler and evaporator were analyzed, and the model of supercritical heat transfer was also proposed.
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