4709| 33
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40cr光度還可以吧,兄弟們 |
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點(diǎn)評(píng)
這個(gè)質(zhì)量管控挺嚴(yán)的。猜這個(gè)標(biāo)記方便記錄檢查結(jié)果
我猜是方便檢驗(yàn)記錄查看的
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點(diǎn)評(píng)
另外,圖紙上的每個(gè)尺寸都標(biāo)公差,有必要嗎?
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