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Beer staling was also influenced the metal ions as the catalyst for staling re action.金属离子的存在能催化自由基反应,金属离子清除剂对啤酒老化也有一定作用....

staling的音标：staling的英式发音音标为：[s'teɪlɪŋ]staling的美式发音音标为：[s'teɪlɪŋ]...