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論 零件工程圖的標(biāo)注方式 |
點評
說的在理,,不過和精度也有很大關(guān)系
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點評
這與孔表不孔表有何關(guān)系,?只是圖面表示不同而已,,現(xiàn)在關(guān)鍵是考慮精度要求和加工工藝
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