Nguồn:
http://forum.cncprovn.com/threads/407-Suu-tam-cach-khac-phuc-vitme-dai-so-danh-vong?s=5428897821a1e2372cd53ddd33f5e798
http://www.mycncuk.com/threads/3340-Rotating-Ballnut-design-ideas/page5
https://m.youtube.com/watch?v=mSNFD9zx7fE
https://m.youtube.com/watch?v=4unEngqU09A
http://forum.cncprovn.com/threads/407-Suu-tam-cach-khac-phuc-vitme-dai-so-danh-vong?s=5428897821a1e2372cd53ddd33f5e798
http://www.mycncuk.com/threads/3340-Rotating-Ballnut-design-ideas/page5
https://m.youtube.com/watch?v=mSNFD9zx7fE
https://m.youtube.com/watch?v=4unEngqU09A
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