2687| 4
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滾絲機(jī)里的結(jié)構(gòu)是什么樣的,?為什么軸移動(dòng)是仍然可以轉(zhuǎn)動(dòng)? |
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小黑屋|手機(jī)版|Archiver|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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