方法：采用近红外漫反射光谱建立定量校正模型。

Method: a quantitive model was built up with near-infrared diffuse reflectance spectroscopy.

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应用可见/近红外漫反射光谱对梨表面色泽进行无损检测研究。

Visible/near-infrared (VIS/NIR) diffuse reflectance spectra were applied to non-destructive measurement of surface color of pear.

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方法：近红外漫反射光谱法结合OPUS软件，建立定性鉴别模型。

Method: a qualitative model was established by NIR DRS and OPUS software.

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