氧化亚氮(N2O)是一种对大气环境有很大破坏作用的污染气体，煤的流化床燃烧是其重要来源。
Nitrous oxide (N2O) is a pollutant gas which has very strong destruction influence on atmosphere environment. Coal combustion in fluidized beds is an important resource for N2O.
氧化亚氮(N2O)是大气中的一种痕量气体，也是一种重要的温室效应气体，还可使臭氧层遭到破坏。
Nitrous oxide (N2O) is a trace gas in the atmosphere, which contributes both to the greenhouse effect and to the destruction of stratospheric ozone.
目的：探讨氧化亚氮（N_2O）吸入麻醉下行无痛人工流产的有效性与安全性。
Objective: To investigate the analgesic effect and the safety of N2O inhaled in induced abortion.
氧化亚氮(N_2O)是大气中一种痕量气体，它具有产生温室效应和破坏平流层臭氧的双重作用。
N2O, as a trace gas in the atmosphere, could cause greenhouse effect and damage the ozone lay in stratosphere.
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.
目的研究氧化亚氮吸入与异丙酚静脉超浅麻醉在拔牙中的效果。
Objective to study the effect of N2O inhalation and propofol intravenous anaesthesia in tooth extraction.
采伐对森林湿地氧化亚氮排放的季节变化规律影响较大，没有一定的规律性，是温度和水位共同作用的结果。
Cutting had quite large influence on seasonal changing regulation of N2O emission without certain regulations, which was considered the result of actions combined temperature and water level.
采伐对森林湿地氧化亚氮排放的季节变化规律影响较大，没有一定的规律性，是温度和水位共同作用的结果。
Cutting had quite large influence on seasonal changing regulation of N2O emission without certain regulations, which was considered the result of actions combined temperature and water level.
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