9880| 20
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電火花加工費用很高嗎 |
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點評
正解
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點評
的確是挺貴的,要是多幾個類似的孔就上千的加工費了
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Archiver|手機版|小黑屋|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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