3221| 3
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想通過(guò)電機(jī)帶動(dòng)絲桿使200公斤的物品進(jìn)行升降,,如圖,,請(qǐng)教 |
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點(diǎn)評(píng)
對(duì)絲桿來(lái)說(shuō),,正裝倒裝有區(qū)別嗎,?
桿件受壓。
怎么裝絲桿都是受壓啊,,你的受壓指的是,?
評(píng)分
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