This may lead him to explore other metals-copper, perhaps, or gold.
他也开发了其他金属材质-铜或金。
Lead, iron, copper, tin, and zinc are base metals.
铅、铁、铜、锡和锌都是基本金属。
Copper has less resistance than lead.
铜的电阻比铅的小。
Copper has less resistance to electricity than lead.
铜比铅的电阻要小。
这管子是铜的呢还是铅的？
Hidden underground is a wealth of gold, silver, copper, lead and zinc.
地下埋藏着大量的金，银，铜，铅和锌。
Hidden underground is a wealth of gold, silver, copper, lead and zinc.
地下埋藏着大量的金，银，铜，铅和锌。
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