7522| 5
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304不銹鋼熱膨脹系數在低溫收縮(0°C以下)是否適用。 |
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點評
no problem
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小黑屋|手機版|Archiver|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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