【摘要】 本文对交流电桥实验中出现的问题,进行了一些研究,提出了用数字式万用表代替指零仪作检流计和改换接线方式的改进方法。更多还原

【Abstract】 This paper introduces some problems in the experiment of alternating - current bridge offered by physics lab of Beijing Institute of Technology,they have been studied and improved.更多还原