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VDCrSi同樣的材料,對應(yīng)國標(biāo)和歐標(biāo),為啥材質(zhì)不一樣? |
Archiver|手機(jī)版|小黑屋|機(jī)械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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