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電流表怎么讀數?

2017-08-23

1. 看清量程
⒉看清分度值(一般而言,量程0~3A分度值為0.1A ,0~0.6A為0.02A )
⒊看清表針停留位置(一定從正面觀察)--使用前的準備:1. 校零,用平口改錐調整校零按鈕. ⒉選用量程{用經驗估計或采用試觸法}

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