LIU Yan-de, WU Ming-ming, LI Yi-fan, SUN Xu-dong, HAO Yong. Comparison of Reflection and Diffuse Transmission for Detecting Solid Soluble Contents and Ratio of Sugar and Acid in Apples by On-Line Vis/NIR Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2017, 37(8): 2424