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用在工業(yè)上的"雪橇車"到底是個(gè)什么鬼? |
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點(diǎn)評(píng)
終于有方向了,,中間換成平面推力軸承那樣的一圈滾子(也可以用平面推力軸承,,但要計(jì)算好承重),最下面四個(gè)很短的滾輪
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點(diǎn)評(píng)
OK,。軌道只是保護(hù)地面用的,,但往往會(huì)事與愿違,建議用大鐵一點(diǎn)的板之類代替
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點(diǎn)評(píng)
放掉自由度,否則干擾非常大,,情況嚴(yán)重會(huì)出事
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