The relationship between the transmittance and leaching effect of the glasses was discussed by measuring UV VIS NIR spectrum.

用光谱仪测定多孔玻璃的紫外可见近红外光谱，对光谱透过率与浸析效果之间的关系作了定性分析。

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So extracting effective information from NIR spectrum and optimizing the original spectrum data are crucial to develop ideal mathematical model in NIRS.

从原始光谱中提取有效信息，对原始数据进行优化处理，成为近红外光谱分析中建立较理想数学模型的关键。

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A novel portable NIR spectrum instrument based on acoustooptic tunable filter is presented. The instrument can be applied to detect the ingredient concentration of liquid food.

提出了一种新型的基于声光可调滤光器(AOTF)的便携式近红外光谱测量仪，该仪器可用于液态食品的组分浓度的测量。

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