5030| 11
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請(qǐng)教,用哪種材質(zhì)的輪好?有圖 |
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點(diǎn)評(píng)
不是彎管機(jī)。是輪子在圓弧軌道上滑動(dòng)的
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從哪一方面說(shuō)?工作環(huán)境?產(chǎn)品的附加值?還是什么……?
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點(diǎn)評(píng)
已經(jīng)刪除
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