求翻译：直流1mA参考电压试验：在避雷器两端施加直流电压（直流电压纹波因数不应大于1.5%），当通过避雷器的电流稳定于1mA后，读取电压数值，不应小于技术参数表中的规定值。试验环境温度为20℃±15K。是什么意思？

DC of 1ma reference voltage test: both ends of the surge arrester applying a DC voltage (DC voltage ripple factor should not be more than 1.5%), when the stability of the current through the arrester the 1ma after, reads the voltage value, should not be less than the technical parameter table predet

DC 1 mA reference voltage test: the lightning both imposed voltage DC (direct current voltage ripple factor should not be greater than 1.5 per cent), and when the lightning is the current stable than 1mA, read the voltage values, and should not be less than the parameter value in the table. Experime

Directs current the 1mA reference voltage experiment: (DC voltage ripple factor should not be bigger than 1.5%) in the arrester both sides infliction DC voltage, after stabilizes through the arrester electric current in 1mA, the read voltage value, should not be smaller than in the technical paramet

1mA DC voltage reference testing: arrester applied DC voltages (DC voltage ripple factor should not be greater than 1.5%), when stable current of an arrester after 1mA, read voltage values of technical parameter table shall be not less than the specified value. Experimental ambient temperature 20 °

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