lighting power density lpd 照明功率密度值 ; 照明功率密度
This article suggests that lighting power density (LPD) should become the evaluating index of tunnels energy-saving lighting.
该文建议应采用照明功率密度(LPD)作为隧道照明的节能评价指标。
The lighting power density (LPD)of general lighting in room or place is taken as the criterion of energy efficient lighting.
该文建议应采用照明功率密度（LPD）作为隧道照明的节能评价指标。
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