被测刀具采用白炽灯照明。

The tools are backlit by incandescent lamps.

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根据将在2012生效的联邦法律，白炽灯将被更高效的照明技术取代，如二极管灯(LED)。

Under federal rules that take effect in 2012, they will be replaced by more efficient lighting technologies, such as LEDs.

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退一步说，一盏白炽灯能产生的亮度与其照明寿命之间的关系很复杂。

The relationship between the amount of light an incandescent bulb can produce and how long it will last is complicated, to say the least.

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