由于贵金属价格不断上涨,国外对铜、镍、铝等贱金属的研究越来越多,其中以铜导体的研究成果尤为突。 铜导体与金导体相比,有三条优点:一是铜导体的成本低得多,二是铜导体与 Due to the rising price of precious metals, there are more and more foreign studies on base metals such as copper, nickel and aluminum, among which research on copper conductors is particularly outstanding. Copper conductor compared with the gold conductor, there are three advantages: First, the cost of copper conductor is much lower, and second, copper conductor and