分别从横向和纵向两个方面分析了改进型分形波带片的光场分布，结果表明，在宽带光照明下，改进型分形波带片的焦深也大于常规的分形波带片。

The analysis of the lateral and axial properties shows that the focal depth of the modified FZP is larger than the FZP under the broadband lighting.

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文章结合常规的照明系统控制及实际照明现场情况，设计和实施了开关灯照度分别独立可调的照明节能装置。

The paper provides the lighting energy-conservation design of the open-plan offices, which is based on the analysis of the lighting energy-conservation in office buildings.

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公用配电装置、电源照明、空调滤网及排风装置等常规的维护及维修。

Repairing and maintenance of common area electricity supply system, lighting, filter of air-condition and ventilation system.

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