磁场

• If the electrical conductivity is high enough the field becomes "frozen" into the plasma .
  如果电导率足够高，磁场就“冻结”在等离子中。
• These ions pass through a slit of variable aperture and then enter the magnetic field analyzer .
  这些离子通过可变宽度的狭缝进入磁场分析器。
• Using a magnetic field to curve the path of the e-beam permits screening of the hot filament .
  用一个磁场使电子束走曲线路径能够屏蔽热阴极。
• Similarly, magnetic fields are generated by electric currents and by time-varying electric fields .
  相仿地，磁场由电流和随时间变化的电场产生。
• In strong fields the magnetization usually changes by rotation of the direction of magnetization .
  在强磁场中，磁化往往由于磁化方向转向而改变。
• The electric currents and the magnetic fluctuations, which cause them are, very similar in form .
  电流以及产生这种电流的磁场波动在形式上极为相似。
• Hours to days before the flare release, excess energy become stored in the magnetic field .
  在耀斑释放前几小时至几天，多余的能量就在磁场中储存起来。
• When the circuit is opened the magnetic field collapses and this energy is returned to the circuit .
  电路断开后，磁场就消灭了，这种能量就回到电路中。
• The particles will drift out of the torus no matter how one juggles the temperatures and magnetic fields .
  不论怎样改变温度和磁场，粒子都将漂移出环。
• Now a wire placed in a magnetic field and connected to a meter shows no sign of a current .
  一根导线放在磁场当中再联上一个电流计，未显示出任何电流的迹象。