2740| 5
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鏈輪加工工藝 |
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點(diǎn)評(píng)
就是滾齒機(jī)那,雙排是一口氣滾出來(lái)的 還是單獨(dú)滾出來(lái)的,,這個(gè)不清楚
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點(diǎn)評(píng)
沒(méi)事了,問(wèn)了一個(gè)在鏈條廠上班的同學(xué)了
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