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“幾”字型鋼成型設(shè)備 |
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就是這種樣子可能叫輕鋼龍骨我不是很清楚
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幾字鋼彎曲成為弧形用什么機器,? 要求不損壞防腐鍍鋅層
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,,浙公網(wǎng)安備33038202004372號 )
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