2) On the culture of the Dalian "Gunzi" card-game 大连"滚子"文化 3) roller large end face 滚子大端面 4) roller connecting rod 滚子轴承连杆 5) big cone angle conical roller 大锥角圆锥滚子 1. Design of stamping mould of cold header forbig cone angle conical roller; ...