2017 cov kev tshawb xav ntawm spinning tshuab
Lub chipless txoj kev spinning siv tshuab cov xov kab dawb paug, raj ntaub dawb paug los yog preprocessed saws. Tus thawj chais
extrude tus hlau khoom ces ua rau cov muaj hnub nyoog txaus ntawm cov khoom siv hlau. Siv tshuab no yuav pab kom tau ducted khoom ntawm tus complex
curvilinear generatrix, sib txawv me kam rau ua ntau yam thiab superior qualit deg
