The formula can reflect the influence of the wavefront steepness of lightning current on the transient magnetic field. 该公式可计及雷电流波头陡度对磁场的影响。
An efficient formula is derived from Maxwell equations for calculating the transient magnetic field inside the high buildings struck by lightning. 从时变电磁场泛定方程和动态矢量位出发,推导出高层建筑物内雷电暂态磁场的计算公式。
The small fox recites the formula because incantation in the brain, the bring an end to * the body red diaphragm reflected aureate lightning flash to burn the whole sky. 小狐默念脑海中的口诀,周身的红色光圈映着金色的闪电燃烧了整个天空。
Also some questions are raised for the use of calculation formula on shielding failure rate by the rule of DL / T620-1997, the selection of the trip rate due to lightning strike related parameters and also the calculation methods. 对DL/T620&1997规定的绕击计算公式的使用、雷击跳闸率及其有关参数的选取和计算方法提出了看法。