2，4-D在1732cm处有一个C=O的伸缩振动吸收峰的翻译：2,4-D 1732cm a C=O at elastic vibration absorption peak 什么意思？中文翻译英文，英文翻译中文，怎么说？

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2,4-D 1732cm a C=O at elastic vibration absorption peak

2,4-D has a C=O expansion and contraction vibration absorption peak in 1732cm place

in 1732, 4 - 2 cm D with a retractable C=O of vibration absorbing Feng

2,4-D 1732cm a C=O at elastic vibration absorption peak