当脉冲量旋转时，辐射束扫过天空，就像灯塔的光束绕地平面扫视那样。
As the pulsar rotates, this beam sweeps the sky in the same way that a lighthouse beam sweeps around the horizon.
介绍测量电磁脉冲量的三种方法原理，分析如何用物理方法求数学上的积分。
This article introduced three methods of measuring electromagnetic pulse and analysed how to calculate the integral by a physics way.
测量功能：高精度测量电流电压、P、Q、功率因数、频率、零序电流、计算电度；2路脉冲量输入实现外部电度表自动抄表；
Measure function: can measure current, voltage, active power, reactive power, frequency, zero sequence current, electric energy, 2 pulse inputs implement watt-hour meter auto read;
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