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並前往https://www.emsd.gov.hk/filemanager/en/content_764/LED_Gnrl_Lghtng_Aplctn.pdf

LED General Lighting Application 「發光二極管 ... - 機電工程署

applications of LED general lighting will also be included in this booklet. 2. What are LEDs? Light Emitting Diodes (LEDs) are solid-.

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