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掛桶式垃圾車,街上發(fā)現(xiàn)后回來研究,仍不明白 |
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點評
你看鏈條的受力點在哪里,,就在鏈條和直接連接處,上升階段順著軌道走,,當拉到盡頭的時候受力點沒有軌道約束,當然就會沿著旋轉(zhuǎn)軸反轉(zhuǎn)�,�,!
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