背光源、灯指示 LCD backlights/light guidesLCD
背光源 灯指示
Backlight indicator
以上为机器翻译结果，长、整句建议使用 人工翻译 。
LED发光二级管广泛用于交通信号灯、汽车指示灯、显示屏、背光源、照明等领域。
Led led with its own unique advantages is widely used in man-machine contact "display area, traffic lights, auto lamp, screen, back light, lighting, etc."
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