Biot - Savart Law: the magnetostatic field produced by a steady current.毕奥.萨伐尔定律: 匀速移动的电荷产生静态磁场.According to actual parameters of inspection equipment , magnetostatic and transient finite element models are established.该...
有些中世纪的城市用驴子或水牛竞赛.Some medieval towns raced donkeys or buffaloes.水牛拉着犁,在稻田里咕唧咕唧地走着.The water buffalo squelched up and down the paddy fields, pulling the plough.水牛提供给埃及的肉比任何其它动物都要多.Water buffaloes supply Egypt with more me...