protective ratio against lightning impulse的意思|示意
美 / /
英 / /
对闪电脉冲的保护比率
protective ratio against lightning impulse的网络常见释义
雷电冲击保护比 ...的)switching impulse protective level (of a protective device) 雷电冲击保护比protective ratio against lightning impulse 操作冲击保护比protective ratio against switching impulse ..