词汇	ultra fine grained copper
释义	ultra fine grained copper 超细晶铜
随便看	economic contraction economic contract law economic contracts Economic Contracts Involving Foreign Interests economic contracts within an enterprise economic contradiction Economic contrast economic contribution economic contribution rate economic contribution rate of education economic contribution rate of transportation economic contributions economic control economic control law economic control of power generation economic control theory economic convergence economic conversion economic co-operaion economic cooperatian administration economic cooperation economic co operation economic co-operation economic cooperation act economic cooperation administration