短语词组短语tension screw stud 夹线螺钉stud screw 柱螺栓螺钉;螺柱螺钉balance spring stud screw 游丝外栓螺钉hairspring stud screw 游丝外桩螺钉balance ring stud screw 游丝外栓螺钉balance e spring stud screw 游丝外栓螺钉 返回 screw stud