自緊鉆夾頭的原理

武歆

https://worldwide.espacenet.com/patent/search/family/022233789/publication/US2010187775A1?q=%20jacobs%20chuck

大白小白

武歆 發(fā)表于 2021-5-8 17:07
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武歆

大白小白 發(fā)表于 2021-5-9 13:04
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