樓主: shaziizahs
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請(qǐng)教一個(gè)鏈條驅(qū)動(dòng)結(jié)構(gòu) |
點(diǎn)評(píng)
不是比例問題,推力作用點(diǎn)怎么可以在轱轆上呢?
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