So if a 100-watt incandescent produces 1, 700 lumens, and a 20-watt LED does the same, the LED will be sold as a 100-watt equivalent.

所以如果一个10 0瓦的白炽灯产生1,700流明，一个20瓦的LED也产生同样亮度，那么就说这个LED灯相当于100瓦白炽灯。

youdao

Lumens are also indicated in the description of the led strip, if not, don't buy it.

流明进行LED条描述的，如果不是，就不要买它。

youdao

U.S. Department of Energy projections published in April 2012 showed the government had expected the industry would only achieve efficiencies of 160 lumens per watt for LED lamps by 2015.

NPR: Goodbye Fluorescent Bulb? Philips Says Yes.

Cree already advertises an LED lamp it says reaches 200 lumens per watt under some circumstances.

NPR: Goodbye Fluorescent Bulb? Philips Says Yes.

The result is a relatively warm light, between 3, 000 and 4, 000 kelvin, that generates more than twice as many lumens per-watt as Philips' current LED bulbs.

ENGADGET