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zzh6733
如何成為一個(gè)不出差的工控人
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樓主  發(fā)表于: 2015-05-16 21:16
圖片中PB是什么電器符號？？？？
liaohp
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1樓  發(fā)表于: 2015-05-17 09:06
開(kāi)關(guān)電源，或者蓄電池  power bank
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真誠感謝！

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