8485| 10
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用橡膠o型圈密封,做旋轉(zhuǎn)運動,,為什么停一段時間不動就很緊,轉(zhuǎn)一兩圈后又很順暢 |
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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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