The energy absorption by the working gas, the radiation loss from plasma and the effect of working-chamber shape on the laser-sustained plasma characteristics are considered.
研究中考虑了工质对激光能量的吸收与辐射热损失，以及吸收室形状对激光维持等离子体特性的影响。
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.
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。
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