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Geography
The study of physical characteristics of earth and the distribution and effects of life on earth, especially that of humans.
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陰極保護
Materials science; Corrosion engineering
(1) 減少移向一種不那麼電極的腐蝕電位腐蝕速率通過應用外部的電動勢氧化的潛力。(2) 局部或通過使它使用電偶或留下深刻印象的電流的陰極，完成從腐蝕金屬的保護。陽極保護的對比。 ...
