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活躍一下氣氛,進行一段時間的有獎翻譯 軟件翻譯不評分
One of the most important advantages of aluminum, other than economics, is its low density. A unit length of bare aluminum wire weighs only 48% as much as the same length of copper wire having an equivalent DC resistance. However, some of this weight advantage is lost when the conductor is insulated, because more insulation volume is required over the equivalent aluminum wire to cover the greater circumference.
