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請(qǐng)教轉(zhuǎn)動(dòng)慣量問(wèn)題 |
點(diǎn)評(píng)
你把你畫(huà)的零件截個(gè)圖出來(lái),,看看吧
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點(diǎn)評(píng)
兩端變細(xì)了
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