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      世界腐蝕日

      Exhibition 科普展板

      Experiments 科普實驗

      銅鋅原電池實驗
      金屬的吸氧腐蝕
      鐵和鎂的電偶腐蝕
      電解池中的五彩繽紛
      水果電池

      Paintings Exhibition 科普繪畫展覽

      亚洲日韩在线中文字幕综合
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