2763| 3
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鈦材的焊接 應注意那些問題? |
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點評
靠,是深寬比15:1,說反了,天差地別。
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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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