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The vital part of the incandescent electric lamp is the tungsten wire inside the bulb.
白炽电灯的关键部分是灯泡里的钨丝。
youdao
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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 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