... reverse-polarity corona charging compensation method 反极性电晕补偿充电法 Reverse polarity protected 反极保护 reverse polarity armature 反极性衔铁 ...
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From sparking plug lead, reverse polarity protected.
从引发插件铅，反向极性保护。
All hardwired connections to LED fixtures shall be reverse polarity protected and provide high voltage protection in the event connections are reversed or shorted during the installation process.
所有与LED装置硬连线的连接须采取逆极性的保护，在这些连接被扭转或缩短的安装过程中，须提供高压保护。
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