未知题型

Current-Voltage characteristics of a few LEDS emitting at different wavelengths from the IR to blue look like that of normal diodes.

【参考答案】

LEDs (Light Emitting Diodes) are semiconductor devices that ......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)

相关考题