전체 ㄱ ㄴ ㄷ ㄹ ㅁ ㅂ ㅅ ㅇ ㅈ ㅊ ㅋ ㅌ ㅍ ㅎ A~Z 제목 PLC (Performance Level Categories) RTI (Relative Temperature Index, RTI) TPS (Technopolymer Structures) UL (Underwriters' Laboratories) VDE (Verband Deutscher Elektrtechniker) VST (Vicat Softening Temperature)