Propionic acid was prepared with propionaldehyde as material, cobalt acetate as catalyst, calgon as cocataly, by propionaldehyde oxidation.是什么意思_Propionic acid was prepared with propionaldehyde as material, cobalt acetate as catalyst, calgon as cocataly, by propionaldehyde oxidation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句