Owing to the strong magnetic field in the magnetosphere, the magnetic field configuration essentially satisfies the approximation of the force-free field.
由于磁层内部的磁场很强，其位形基本满足无作用力磁场近似。
Using the multistep implicit scheme, a numerical study was made to reveal the influence of linear force-free field to the spontaneous reconnection of current sheets.
采用二维三分量磁流体力学数值模拟方法，研究了线性无力场对电流片的自发重联的影响。
When the magnetic field deviates from potential or force-free field, the field-aligned current can be produced, and it relates closely with the intensity and lifetime of ducts.
当磁场偏离势场或无力场时，将会产生场向电流，该电流与导管的强度和稳定维持密切相关。
It tells you that you cannot get energy for free out of your force field.
就意味着你不可能在力场里面无偿地得到能量。
In this paper the evolution of force-free magnetic field was discussed.
本文讨论了太阳活动区和黑子区的无力场的演化。
With force free model, it is shown that the photospheric transverse current is independent of the sense of the transverse field and can be found completely by vector magnetographic measurement.
并证明了光球横向电流与横向磁场的指向无关，因而完全可以由向量磁象仪测定。
Amongst these, one of the most important problem is to solve the boundary value problem for the solar force-free magnetic field equation.
这其中最重要的一个问题就是通过数值方法求解太阳无力磁场方程的边值问题。
Amongst these, one of the most important problem is to solve the boundary value problem for the solar force-free magnetic field equation.
这其中最重要的一个问题就是通过数值方法求解太阳无力磁场方程的边值问题。
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