
n.示波器
The induction method for measuring the alternating magnetic field is improved with the oscillograph, the effect and precision of the experiment are improved. 摘要采用示波器對(duì)感應(yīng)法測(cè)交變磁場(chǎng)實(shí)驗(yàn)進(jìn)行了改進(jìn),提高了實(shí)驗(yàn)的效果和精度。