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在600*600的矩形鋼板上均布120個(gè)螺紋孔,12*10,出圖時(shí)有沒有簡單表示法 |
點(diǎn)評
你仔細(xì)看下文字,若干直徑相同且成規(guī)律分布的孔,規(guī)律分布完全等于均布???
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