demonstration diode
... demagnetization 去磁，退磁 demonstration diode 演示用二极管 demonstration meter 演示用电表 ...
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一种教学用演示电路板，由接收机、电池盒、舵机、触碰开关、发射机、舵盒、发光二极管组成。
A teaching demonstration circuit board consists of a receiver, a battery holder, a steering engine, a touch switch, a transmitter, a steering box and light emitting diodes.
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