地球表面释放出从吸收自太阳的红外辐射，温室气体将这种能量作为热部分地保留下来，使得地球成为可以繁衍生息之地。
The Earth’s surface emits infrared radiation it has absorbed from the sun. Greenhouse gases partly trap that energy as heat, keeping the planet habitable.
氢分子发出红外线的原因是它们吸收了恒星发出的紫外线，或者是受到了恒星喷发的炽热气体流的加热。
The molecules emit the infrared light that they have absorbed ultraviolet radiation from the star or have been heated by the wind from the star.
基本的原理我们都很清楚，并可以在一分钟内给一个不是科学家的好奇者解释完毕（就像这样：温室气体可以让阳光直接穿透到地球表面，地表受热就会升温，于是就会散发红外辐射，辐射能量被大气吸收，大气就被加热了。
We understand the basic physics just fine, and can explain it in a minute to a curious non-scientist.
没有人质疑二氧化碳是为温室气体，和其绝佳吸收红外线辐射的能力。
No one doubts that carbon dioxide is a greenhouse gas, good at absorbing infra-red radiation.
温室气体吸收红外辐射的热量，并且把这个热量保存在大气层中。
Greenhouse gases absorb this infrared radiation and trap the heat in the atmosphere.
一些正在“享受盛宴”的黑洞被气体和灰尘所遮蔽，它们吸收掉大多数光线——但仍会发出红外光线。
Some feasting black holes are obscured by gas and dust, which absorbs much of their glow-but they still shine in the infrared.
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.
论文以甲烷浓度检测为目的，进行基于近红外吸收原理的光纤甲烷气体传感技术的研究。
Methane concentration measurement is the paper's purpose. Fiber methane gas sensing technique is studied based on the principle of near infrared absorption.
利用AOTF红外光谱检测仪分别对苯、异丙醇气体进行光谱测试，扫得谱图的吸收峰位置与傅立叶光谱仪的结果基本一致，分辨率水平还有待于进一步提高。
The spectrum peaks of benzene and isopropyl alcohol gas collected by AOTF infrared spectrometer were consistent with the results gotten by FTIR, however the resolution should be improved.
在主动式红外遥感测量中，大气中痕量气体的红外吸收与不同红外波段的透过率光谱有关。
In active infrared remote sensing measurements, the infrared absorption caused by the presence of trace gases in atmosphere is related to the transmittance spectra in different infrared wave band.
基于甲烷气体的红外光谱吸收特性，研究了长光程差分吸收式甲烷气体检测的方法。
Based on the infrared spectrum absorption characterization of methane gas, the long optical distance differential absorption method for methane detection is studied.
红外可调谐二极管激光吸收光谱技术作为新的痕量气体监测分析方法，在大气化学研究和污染气体监测中得到了应用。
Tunable diode laser absorption spectroscopy has been applied in the fields of atmospheric chemistry and monitoring pollutant gases as a new method of measuring trace gases.
究其原因，原来是大气中的温室气体造成了这种温度上的差异。温室气体吸收，并再度释放了远红外辐射，使得底层大气与地表保持温暖(参见以下附图)。
The discrepancy is due to greenhouse gases in the atmosphere, which absorb and re-emit infra-red radiation, and thus keep the lower atmosphere, and the surface, warm (see the diagram below).
通过对气体近红外选择性吸收的理论分析，给出了气体吸收测量的理论依据。
After analyzing the theory of near-infrared selective absorption of gas, we describe the academic base of the measurement of the gas by absorption theory.
而红外光可燃气体探测器特别适用于对某一频带红外光具有较强吸收能力的碳氢化合物。
However, the infrared light flammable gas detector is very suitable for the hydrocarbon with stronger absorbing ability to some frequency band infrared light.
利用红外吸收型CO2气体传感器设计了一种CO2气体检测方法，详细阐述了其结构和工作原理。
CO2gas detection method is designed by using a sensor which absorbs CO2. The principle and constitute of its is expatiated.
当污染气体与背景存在温差时，红外光谱就能反映出污染气体的吸收或发射特征。
When there is temperature difference between the pollutant gas and the background, the absorption and emission characteristics of the pollutant gas can be revealed in infrared spectra.
基于甲烷气体的近红外吸收光谱，研究了一种高灵敏度光谱吸收型光纤甲烷气体传感器。
Based on the near infrared spectral absorption of methane, a system using absorption type optic fiber for high sensitivity methane detection is demonstrated.
基于甲烷气体的近红外吸收光谱，研究了一种高灵敏度光谱吸收型光纤甲烷气体传感器。
Based on the near infrared spectral absorption of methane, a system using absorption type optic fiber for high sensitivity methane detection is demonstrated.
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