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The thin wire is not made of copper; it is made of tungsten.
细导线并不是由铜制的，而是由钨制的。
youdao
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The four main industries are tungsten, rare earth, copper and silver tin.
主导产业有，钨业、稀土业、铜业和银锡业四大产业。
youdao
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The four main industries are tungsten, rare earth, copper and silver tin.
主导产业有，钨业、稀土业、铜业和银锡业四大产业。
youdao