Making transmission projection experimental realia of Ohmmeter is convenient for teaching Ohm-meter measurement principle with the aid of projector.
制作欧姆表透射投影教具，可便于结合投影仪进行欧姆表测量原理的教学。
Making transmission projection experimental realia of Ohmmeter is convenient for teaching Ohm-meter measurement principle with the aid of projector.
制作欧姆表透射投影教具，可便于结合投影仪进行欧姆表测量原理的教学。
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