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A car stayed put in garage for too long a period of time. Corrosion occurred in the water pipe, and its engine got jammed because of over-heating.
車太久不開, 靜止的水管中, 腐蝕進行是會較迅速的..... local cell(局部電池) corrosion. 當然也有其他貢獻因素: inclusions+ over-pickling+strain cell....
上: 管外; 下: 管內情形. above: looking from O.D. below: corrosion deposites.
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