带滑块座滚动轴承
问https://images.weserv.nl/?url=http://inews.gtimg.com/newsapp_ls/0/14387467027/0
答
https://images.weserv.nl/?url=http://inews.gtimg.com/newsapp_ls/0/14387470732/0
https://images.weserv.nl/?url=http://inews.gtimg.com/newsapp_ls/0/14387473057/0https://images.weserv.nl/?url=http://inews.gtimg.com/newsapp_ls/0/14387474953/0
这就是成品
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