| Subject | English | Spanish |
| patents. | electrotechnical and electronic apparatus | aparatos electrotécnicos y electrónicos (comprendidos en la clase 9) |
| patents. | electrotechnical and electronic apparatus and instruments so far as contained in class 9 | aparatos e instrumentos electrotécnicos y electrónicos (comprendidos en la clase 9) |
| patents. | electrotechnical apparatus | aparatos electrotécnicos |
| environ. | electrotechnical equipment | equipo electrotécnico |
| environ. | electrotechnical equipment All the equipment connected with the technological use of electric power | equipo electrotécnico |
| environ. | electrotechnical industry | industria electrotécnica |
| environ. | electrotechnical industry | industria electrónica |
| environ. | electrotechnical industry A sector of the economy in which an aggregate of commercial enterprises is engaged in the design, manufacture and marketing of machinery, apparatus and supplies for the generation, storage and utilization of electrical energy, such as household appliances, radio and television receiving equipment, and lighting and wiring equipment | industria electrotécnica |
| commun., IT, tech. | electrotechnical standardization | normalización electrotécnica |
| el. | electrotechnical term | término electrotécnico |
| nat.sc., industr., polit. | European Committee for Electrotechnical Standardization | Comité europeo de normalización electrónica |
| org.name. | European Committee for Electrotechnical Standardization | CENELEC |
| tech. | European Committee for Electrotechnical Standardization | Comité Europeo de Normalización Electrotécnica |
| org.name. | International Electrotechnical Commission | CEI |
| comp., MS | International Electrotechnical Commission One of two international standards bodies responsible for developing international data communications standards. The International Electrotechnical Commission (IEC) works closely with the International Organization for Standardization (ISO) to define standards of computing. They jointly published the ISO/IEC SQL-92 standard for SQL | Comisión electrotécnica internacional (CEI) |
| nat.sc., industr., energ.ind. | International Electrotechnical Commission | Comisión Electrotécnica Internacional |
| el. | International Electrotechnical Vocabulary | Vocabulario Electrotécnico Internacional |
| industr., energ.ind. | rules for the authorization of electrotechnical installers | normas de autorización para los instaladores electrotécnicos |
| coal. | Spanish Electrotechnical Association | Asociación Electrotécnica Española |