5041| 19
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推出時(shí)頂起、退回時(shí)縮下機(jī)構(gòu) |
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點(diǎn)評(píng)
凸輪不是土得掉渣哦,而是牛得發(fā)光
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點(diǎn)評(píng)
不會(huì)說(shuō)的是我的這個(gè)吧?如果是,我說(shuō)這玩意兒,是靠慣性而非其他,更不需要彈簧或地球引力。頂多加兩個(gè)永磁塊。
更要借助物件的形狀
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