常见例句用作名词 (n.)Silver in ores is positively correlated with copper but it is absent in galena.矿石中的银与铜呈明显正相关关系Lead is rarely found free in nature; it is major in the sulfide and galena.铅在自然界中很少呈游离态，主要存在硫化物和方铅矿中。 返回 galena