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設(shè)計(jì)機(jī)械零件你一般更喜歡用什么材料? |
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點(diǎn)評
硬鋁啊,不軟
好像有點(diǎn)軟,很容易磕碰,這是鋁材里面屬于什么檔次,中低高。
好像有點(diǎn)軟,很容易磕碰,這是鋁材里面屬于什么檔次,中低高。
恩是的
LY12?
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