When the current begins to rise from zero toward its peak value, a magnetic field is created around the choke coil.
当电流开始从零上升到朝向其峰值，一个磁场被扼流线圈周围产生。
When the current begins to rise from zero toward its peak value, a magnetic field is created around the choke coil.
当电流开始上升，从零到峰值，磁场是在扼流圈了。
When the current begins to rise from zero toward its peak value, a magnetic field is created around the choke coil.
当电流开始上升，从零到峰值，磁场是在扼流圈了。
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