An LED is a type of diode or semiconductor device that emits light when electrons flow through layers of crystalline inorganic material.
LED 是一种二极管或半导体器件,当电子流过结晶无机材料层时会发光。
单词 | semiconductor devices |
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原声例句
SciShow 合集 An LED is a type of diode or semiconductor device that emits light when electrons flow through layers of crystalline inorganic material. LED 是一种二极管或半导体器件,当电子流过结晶无机材料层时会发光。 |
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