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關(guān)于螺紋孔底孔的問(wèn)題 |
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點(diǎn)評(píng)
下了,不過(guò)好多資料?。】刹豢梢院?jiǎn)單明了的回答一下他說(shuō)的到底對(duì)還是不對(duì)呢?
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點(diǎn)評(píng)
這個(gè)應(yīng)該是準(zhǔn)確的吧?十分感謝!?。。。?nbsp;
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