差分光学吸收光谱法(DOAS)应用于固定污染源烟气排放监测时，烟气中污染气体so2浓度较高将产生非线性吸收问题。
Nonlinear absorption occurs when the differential optical absorption spectroscopy (DOAS) is used to monitor the flue gas with high SO2 concentration from fixed pollution source.
建立了红外光谱法对药物含水量非线性定量模型。
A nonlinearity model of quantitative analysis of moisture content by infrared spectroscopy was developed.
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