si unit

常见例句

• The SI unit of magnetic flux equal to the magnetic flux that in linking a circuit of one turn produces in it an electromotive force of one volt as it is uniformly reduced to zero within one second.
  韋伯磁通量的國際單位，等於儅磁通量在一秒鍾內被統一地減弱爲零時在它聯接的一圈電路內産生一伏特電動勢時的磁通量
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