短语词组短語balance spring stud screw 遊絲外栓螺釘hairspring stud screw 遊絲外樁螺釘balance ring stud screw 遊絲外栓螺釘balance e spring stud screw 遊絲外栓螺釘Screw stud 雙頭螺栓;無頭螺樁;螺柱tension screw stud 夾線螺釘 返回 stud screw