爱迪生的实验室为制造铂丝灯泡付出了大量的努力,但这些投入都白费了,因为铂的电阻相对较低。
Edison's lab put a lot of effort into making a bulb with a platinum filament, but that work went nowhere, because platinum has a relatively low resistance.
这个小灯泡的电阻比那个大灯泡的大。
This small lamp has a higher resistance than that large one.
随着电流的增加,金属丝灯泡的电阻是增加的,而碳丝灯泡的电阻是减小的。
The resistance of the metal-filament lamp increases, and that of the carbon-filament lamp decreases with increase of current.
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