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  • 電纜內、外護層的作用

    發布時間:2021-09-06

    內護層作用:使絕緣層不會與水、空氣或其他物體接觸,防止絕緣受潮和絕緣層不受機械傷害。

    外護層作用:保護內護層不受機械損傷和化學腐蝕,增強機械強度。



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    午夜视频精品视在线播放
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