回複：It is an interesting question. I think

jassco · 2012-08-26 15:22:16Z

回複：It is an interesting question. I think簡介

來源: jassco 於 2012-08-26 15:22:16 [檔案] [舊帖] [給我悄悄話] 閱讀數 : (133 bytes)

回答: 請求解惑：金屬導線，用於傳導電流，為何金屬導線相對不疲勞？由大江川於 2012-08-26 12:50:40

electrons do not contribute to strength of metalic materials. They are free to float.

Best regards,

Alex

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