... demonstration diode演示用二极管 demonstration meter演示用电表 density密度 ...
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Demonstrating Electric Meter, Model J0403 has 14 ranges. It can serve as current detector in the experiment demonstration, measurement of micro current. DC voltage and DC resistance.
J 0403型高中演示电表共有十四档量程，供教学演示实验中作检流计，测量微小电流，测量直流电压、直流电阻。
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