通过脂肪酸、氨基酸等分子的稳定同位素特征，可以更细致更准确地了解食物网的营养结构、物质和能量的传递过程。
Stable isotopic characteristics of fatty acid and amino acid can reveal trophic structures, matter and energy flow processes of Marine food webs in detail.
本文简要说明了这种仪器的原理、结构和特征，并给出了制备分离甾族反应混合物、吲哚类植物激素、二硝基苯氨基酸的应用结果。
In this paper, the results of preparative separations of steroid reaction pro-ducts, indole auxins, and DNP amino acid mixture with suitable two-phasesolvent systems is introduced.
简述了非蛋白氨基酸的结构特征和生理活性。
The diversity of structure and physiological activity of non - protein amino acids is briefly described.
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