短语词组短语fine -blanking 精密冲裁fine abrasive blanking 精密冲裁ferrule fine -blanking 精密套冲hydraulic fine blanking press 精密冲裁液压机fine blanking die [机]精冲模fine blanking die structure 精冲模结构fine blanking pre 精密下料冲床 返回 fine blanking