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It is the current state of the filament heated to incandescence and is used to light the lamp.
它是电流把灯丝加热到白炽状态而用来发光的灯。
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A fine wire heated electrically to incandescence in an electric lamp.
白炽电灯的关键部分是灯泡里的钨丝。
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A fine wire heated electrically to incandescence in an electric lamp.
白炽电灯的关键部分是灯泡里的钨丝。
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