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用“LEDs”造句大全，LEDs造句

用“LEDs”造句大全，LEDs造句

2018-01-25
LEDs-lightemittingdiodes-havebeenaroundfordecades.TheadvantageofthisapproachisthatblueLEDsarethebrightest,mostenergy-efficientkind.Giventhesemajorbenefits,LEDsarealreadythelightofchoicefortrafficsigna...