Some difficulties in recognition of the spectra of PEMA come from the overlap of proton peaks. The a

中文解释

虽然质子峰的重叠给谱的识别带来一些困难，但是利用H-Hcosy和C-Hcosy提供的信息讨论了PEMA的~1H谱和~（13）C谱中各谱峰的归属。