4489| 11
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這個(gè)加工符號(hào)什么意思 |
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點(diǎn)評(píng)
一般默認(rèn)的是Ra。有Rz的都會(huì)在數(shù)值前面標(biāo)注Rz。
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Archiver|手機(jī)版|小黑屋|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
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