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The determination ofm - cresol content by brominating volumetric method was investigated.
探讨了 间甲酚 含量的容量分析方法.
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With C 9 petroleum resin and bromine as materials , a brominating C 9 petroleum resin was synthesized.
用C9石油树脂和溴素反应制备了溴化石油树脂,探讨了最佳溴化反应条件.
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