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求問:有沒有這種材質(zhì),,與軸相對轉(zhuǎn)動,有較好的耐磨性,,與軸摩擦不產(chǎn)生較大聲響 |
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網(wǎng)安備33038202004372號 )
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