,symbol "U",U, <atmosfery wybuchowe> m,símbolo "U", <atmosferas explosivas>,U,符号“U”, dictionary, definition, meaning, translation, term, terminology, IEC 60050, Electropedia, IEV 426-04-31,IEV, International, Electrotechnical, Vocabulary, VEI, Vocabulaire, Electrotechnique, Internationale, IEC, electric, electronic" /> ,symbol "U",U, <atmosfery wybuchowe> m,símbolo "U", <atmosferas explosivas>,U,符号“U”" >