我们采用电磁动力学的方法计算了瞬时启动时灯丝螺旋线圈所受到的磁场力，并就瞬时冲击电流对灯丝寿命的影响进行了讨论。
Since the filament is coiled, the increase of the filament current will consequently induces a larger electromagnetic force between the coils. We calculate the electromagnetic force of in…
冲击电流：电流过程中通过的瞬时大电流。
Impact current: current process through the instantaneous current.
冲击电流：电流过程中通过的瞬时大电流。
Impact current: current process through the instantaneous current.
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