The electric field intensity decay is 40 dB per decade of distance in near field of a magnetic dipole.

 
  • 磁偶極之近場(chǎng)輻射電場(chǎng)強度隨距離每增十倍衰減四十分貝。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan