被测刀具采用白炽灯照明。
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.
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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