Vanillin 1,2-propylene glycol acetal was synthesized from Vanillin and 1,2-propylene glycol using ferri postassium sulfate as catalyst.是什么意思_Vanillin 1,2-propylene glycol acetal was synthesized from Vanillin and 1,2-propylene glycol using ferri postassium sulfate as catalyst.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句