微量气体,trace gas
1)trace gas微量气体
1.During May 22 to December 31 of 2005,continuous measurements of some trace gases at Xinglong Station,atmospheric background observation network of Chinese Academy of Sciences were carried out.2005-05-22─2005-12-31,在中国科学院大气本底观测网兴隆站对微量气体成分进行连续测量,获得了O3,NOx(NO,NO2),CO2和SO2等气体组分的变化特征和变化规律,并得到了它们的浓度水平。
英文短句/例句

1.Natelson microgasometer纳迪逊微量气体分析仪
2.infrared microgas analyzer红外微量气体分析仪
3.Soil microorganisms exercise direct effects on trace gases metabolism.在微量气体代谢中,土壤微生物具有直接的作用。
4.Study on the Trends and Chemical Process of Trace Gases in Stratosphere平流层微量气体变化趋势及其化学过程的研究
5.microblood gas analysis apparatus微量血液气体测定器
6.STUDY ON MEASUREMENT METHOD OF SMALL ORIFICE CONDUCTANCE USING GAS MICRO-FLOWMETER气体微流量计测量小孔流导方法研究
7.PREPARATION OF MICRO-OXYGEN IN NITROGEN CALIBRATION GASES BY GRAVIMETRIC METHOD重量法制备氮中微量氧气体标准物质
8.Determination of trace oxygen in the gases--Colorimetric methodGB/T5831-1986气体中微量氧的测定比色法
9.Determination of trace oxygen in gases--Electrochemical methodGB/T6285-1986气体中微量氧的测定电化学法
10.Determination of trace water in the gases--Dew point methodGB/T5832.2-1986气体中微量水分的测定露点法
11.Determination of trace water in the gases--Electrolytic methodGB/T5832.1-1986气体中微量水分的测定电解法
12.Determination of trace hydrogen in gases--Gas chromatographic methodGB/T8981-1988气体中微量氢的测定气相色谱法
13.The development of micro flow pVTt gas flow standard device微小流量pVTt法气体流量标准装置的研制
14.Study of the Trace Elements in Individual Fluid Inclusion Based on SRXRF用SRXRF微探针研究含油气单个流体包裹体的微量元素分布
15.Determination of trace oxygen in gases--Phosphor chemiluminescence methodGB/T14852-1993气体中微量氧的测定黄磷发光法
16.DETERMINATON OF TRACE He,Ne AND Ar IN GAS SAMPLES BY IDMS同位素稀释质谱法测定气体样品中微量氦氖氩
17.Studies on Removing Minor Content of Hydrogen Sulfide in Gas by Pressure Swing Sorption;变压过程脱除气体中微量硫化氢的研究
18.Study on Measurement Technology of Micro-moisture in Cold Spray Gases for Attitude Control;姿控冷喷气体的微量水份检测技术研究
相关短句/例句

Trace gases微量气体
1.Since the stratospheric trace gases play an important role in the ecological environment and climate system on the earth, more attentions are paid on the trends of stratospheric trace gases including ozone, nitrogen oxide, nitrogen dioxide, chlorine hydride, water vapor, and methane etc.平流层微量成分对地球生态环境和气候系统影响巨大,所以包括臭氧、NOx、HCl、H_2O和CH_4等在内的平流层微量气体的变化一直广受关注。
3)atmospheric trace gases大气微量气体
4)Trace gas measurement微量气体测量
5)gas micro-flow measurement气体微流量测量
6)microgas survey微量气体测量<能>
延伸阅读

大气微量气体大气微量气体atmospherictracegases大气中含量很微小的气体组分,即除氮、氧和惰性气体以外的其他气体组分。它们的浓度大多低于100微克/米3。对流层大气中,氧和氮是主要的气体组分,惰性气体氩-40、氖、氦-4、氪和氙也有相当的含量,这是大气长期演化过程的结果,它们在大气中存在的时间很长,可以认为在相当长的时间内它们的含量是不变的。而大气微量气体如氮氧化物、碳氧化物、氯化物和硫化物等,都参与了周期相当短的化学循环,它们的滞留期从几十年到几天,甚至时间更短。已发现的大气微量气体有20多种,其中浓度最小的是氡,它在空气中的混合比(按体积计算)为6×10-20。随着分析技术的发展,预期还会发现更多的微量气体。大气是一个动态体系,微量气体通过与海洋、土壤和生物体系进行交换,构成了包括物理过程和化学过程在内的气体循环。