3589| 3
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此圖12-1-3/8-8UN-2B螺紋加工在C面還是B面? |
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點(diǎn)評
有道理,看圖必須要全面的看,仔細(xì)地看,分析的看,這是這個(gè)行業(yè)的基本要求與長期養(yǎng)成的好習(xí)慣,雖然掙錢不多,但責(zé)任重大。呵呵,行業(yè)之悲哀,國家之悲哀。
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