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.

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。

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There isn't a guidance method of evaluating luminous efficacy of light sources on road lighting yet resulted in the problem has not been solved at present.

由于目前国内尚缺乏定量地评价道路照明光源相对光效的指导方法，导致此问题一直悬而未决。

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Being part of it, green lighting projects are attracting more and more attention. As a high efficacy long life time lighting source, high Intensity Discharge (HID) lamp plays an important role in it.

作为一种高效、长寿命的新型电光源高强度气体放电灯在绿色照明工程中扮演了重要的角色。

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