copper foil的用法和樣例：
例句
- The electrolytic copper foil production for printed circuit board in the world has experienced almost fifty years.
印製電路板用電解銅箔產品在世界上已經歷了近五十年的發展歷程。 - Then, the thickness of copper foil and strand diameter of Litz wire is discussed to obtain the minimum winding losses.
最後針對最小線損下，探討銅箔厚度及多股絞線直徑之最佳設計尺寸。
