20635| 40
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一個(gè)孔對(duì)另外一個(gè)孔的位置度,,公差值前應(yīng)該標(biāo)直徑符號(hào)么? |
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評(píng)分
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點(diǎn)評(píng)
應(yīng)該是GB-T 1182里面的內(nèi)容吧
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