6476| 33
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SW標(biāo)注的半徑 |
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點(diǎn)評(píng)
令人大跌眼鏡,但凡小學(xué)認(rèn)真學(xué)過都會(huì)知道R/r代表半徑,這已經(jīng)與機(jī)械制造專業(yè)領(lǐng)域的知識(shí)沒有多大關(guān)系了
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哈哈哈
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