您要查找的是不是：
- As electrical current from the radio passes from the connector through the voice coil, it creates a varying Magnetic field that interacts with the permanent magnet's field. 网友解答：当收音机中的电流从连接器通往声音线圈时，它会产生一个变化的磁场，并且与永久磁场相互作用。
- Barkhausen effect is produced by ferromagnetic material under varying magnetic field, it can be used as a new method for nondestructive testing of residual stress. 铁磁材料在交变磁场的作用下,产生的巴克豪森效应,可作为无损检测材料残余应力的一种新方法。
- The article deduces emf from varying magnetic field and motional emf in a general case further researches induced electric field and presents two important formulae of induced electric field. 摘要本文推导出在一般情况下的感生电动势和动生电动势公式，并在此基础上，对感生电场进行了进一步的研究，给出了求解感生电场的两个重要公式。
- This paper to calculate, analyse and discuss indued electric field produced by varied current carrying solenoidal frame. A general method of soling induced electric field stimulated by even varied magnetic field is advanced. 对变流螺绕框激发的感生电场进行了计算、分析和讨论 ,提出了求解由匀变磁场所激发的感生电场的普遍方法
- It shows the presence of a magnetic field. 这表明有磁场存在。
- varying magnetic field 变化磁场
- Can Magnetic Field Drill through a Piece of Iron? 磁场能穿过铁片吗?
- The string is in a magnetic field. 振动弦处于磁场之中。
- The force exerted by a magnetic field. 力由磁场施加的力。
- The lines of force of a magnetic field. 磁力磁场的磁力线
- The generation of electromotive force in a closed circuit by a varying magnetic flux through the circuit. 电磁感应在一个封闭回电路里，通过改变其磁流而产生电动势
- A uniform magnetic field acts perpendicular to the porous surface which absorbs the micropolar fluids with a suction velocity varying with time. 均匀磁场垂直作用于可以吸收微极流体的多孔表面，吸引速度随着时间而变化。
- The class of phenomena exhibited by a magnetic field. 磁性磁场显示的一组现象
- The current in the conductor sets up a magnetic field. 导体里的电流形成一个磁场。
- A third radiation group was unaffected by the magnetic field. 第三组射线不受磁场的影响。
- The magnetic field of the earth creates a torque around the pivot. 地球的磁场在支点周围产生一个转矩。
- We might put the current-carrying wire in a magnetic field. 我们可将载流导线置于磁场中。
- The stronger the magnetic field,the more current is generated. 磁场越强，发出的电流就越多。
- Don't bend or stain and avoid magnetic fields. 不要弯折、污损，并避开磁场。
