小中大请教:样品方法制备!!
The samples were prepared by adding approximately 3g of a 50/50 mixture of tetrachloroethane-d2/orthodichlorobenzene that was 0.025M in chromium acetylacetonate (relaxation agent) to 0.4g sample in a 10mm NMR tube.
样品通过以下方法制备:在10mm NMR管中向0.4g样品添加三乙酰丙酮根合铬(弛豫剂)为0.025M的四氯乙烷-d2/邻二氯苯的约3g的50/50混合物。
在配制碳谱样品时,三乙酰丙酮根合铬(弛豫剂)通常加多少?
这是我自己译的,可是不确定是否正确,因为和正常的语法似乎不符。