3135| 18
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粗糙度標(biāo)注問題 |
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點(diǎn)評
樓主應(yīng)該問的是兩個(gè)1.6那個(gè)方向不一樣的事
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點(diǎn)評
查查國標(biāo) 里面都有
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點(diǎn)評
你在開玩笑 機(jī)械制圖國標(biāo)中 就有這個(gè)標(biāo)注
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