详细解释:【计】 控制器, 立方, 用户占用
【医】 铜(29号元素)
英语解释：
名词 cu:
a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor同义词：copper, atomic number 29