天然祖母绿与合成祖母绿的红外吸收光谱特征具有明显的差异；
The infrared absorption spectra characteristics indicated obvious differences between natural and synthetic emeralds.
本文用紫外吸收光谱法和凝胶过滤——原子吸收光谱法研究了明胶钙结合配体的特征。
In present article the feature of ligands combined with gelatin -calcium is studied by UV spectrometry and gel filter-AAS method.
结果表明，紫甘蓝色素的吸收光谱为花色苷的特征吸收。
The results showed that absorption spectrum of violet cabbage pigment is distinction of anthocyanins.
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