headstock造句
Onthebasisoforiginalscrewtype,windingtypeandhydraulictypeHeadstock,akindofdentateannulheadstockisdesignedandmanufactured.Thefocalpointofthistopicisthesystemdesignandthebackheadstockdesign.Amaple,satin...
Onthebasisoforiginalscrewtype,windingtypeandhydraulictypeHeadstock,akindofdentateannulheadstockisdesignedandmanufactured.Thefocalpointofthistopicisthesystemdesignandthebackheadstockdesign.Amaple,satin...