9898| 12
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直線軸承與圓柱配合使用,上下運(yùn)動(dòng)時(shí)起導(dǎo)向作用,這樣使用是否合理? |
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點(diǎn)評(píng)
長(zhǎng)的導(dǎo)向肯定好
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