12777| 16
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尋找一種非金屬材料.耐高溫、強度大、隔熱、絕緣 |
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ketron
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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