5807| 20
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滾輪內(nèi)部結(jié)構(gòu)該怎樣設(shè)計才好 |
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點評
這種結(jié)構(gòu)沒法座上裝配啊
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點評
這種結(jié)構(gòu)滾子尺寸會很大并且不好裝
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