虽然白炽灯的发光效率极限是每瓦52流明，然而这钨丝在其熔点的理论亮度。
While the upper limit for incandescent lamps is 52 lumens per watt, that is the theoretical luminosity of tungsten at its melting point.
并且其发光效率比普通荧光灯提高了30%，约为白炽灯的5倍。
And its luminous efficiency than ordinary fluorescent lamps increased by 30%, about 5 times the incandescent lamp.
光谱十分接近于太阳光谱，从而使灯的发光效率及显色性大为提高。
Spectrum very close to the solar spectrum, so that the light-emitting efficiency and light color of greatly improved.
从上表可以看出，由于XED特种节能灯的高发光效率，150w XED特种节能灯可替代400w高压钠灯，达到同样路面照明效果。
From above table, due to the high luminous efficacy XED energy-saving lamps, 150w XED special energy-saving lamp can replace 400w high High-pressure sodium lamp to gain the same road lighting effect.
传统射灯多采用卤素灯，发光效率较低、比较耗电、被照射环境温度上升、使用寿命短。
Halogen spotlights to use more traditional, lower light, more power, increased by exposure to ambient temperature, short life.
传统射灯多采用卤素灯，发光效率较低、比较耗电、被照射环境温度上升、使用寿命短。
Halogen spotlights to use more traditional, lower light, more power, increased by exposure to ambient temperature, short life.
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