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酬勞5元,誰(shuí)會(huì)做下面的課后習(xí)題:試設(shè)計(jì)銑床中的一對(duì)標(biāo)準(zhǔn)直齒圓柱齒輪傳動(dòng)。 |
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點(diǎn)評(píng)
還是前輩出色,我司決定放棄競(jìng)標(biāo)👍
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