A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
UFR(저주파수 계전기)
UNFCCC Annex 1(부속서1)
UNFCCC Annex Ⅱ(부속서2)
UNFCCC(United Nations Framework Convention on Climate Change:기후변화에관한국제연합기본협약)
UPFC(Unified Power Flow Contoller)
UPS(Uninterruptible Power Supply System:무정전 전원장치)
UPS(Uninterruptible Power Supply)
Up-Stream, Down-Stream(상류, 하류)
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