LED的二次光学元件设计对LED路灯的配光及光学输出效率至关重要。
The secondary optics design is a critical issue for the output efficiency and light distribution pattern of the LED street light.
LED的二次光学元件设计对LED路灯的配光及光学输出效率至关重要。
The secondary optics design is a critical issue for the output efficiency and light distribution pattern of the LED street light.
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