automatic change over 中文意思是什麼
automatic change over
解釋
自動轉換-
Specification for automatic change - over contactors for emergency lighting systems
緊急照明系統用的自動轉換接觸器規范 -
Low - voltage switchgear and controlgear for industrial use - automatic change - over devices for emergency lighting systems
工業用低壓開關設備和控制裝置.應急照明系統用自動轉換裝置
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