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圖紙中有的尺寸帶方框是什么意思 |
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但總得有個(gè)公差吧,不然以什么標(biāo)準(zhǔn)來(lái)檢驗(yàn)?zāi)亍?nbsp;
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點(diǎn)評(píng)
公差怎么給呢,?
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