| Subject | English | Spanish |
| comp., MS | A/R | C, ctas. por cobrar (A group of posting accounts that show the amounts customers owe for services or sales made on credit) |
| comp., MS | A/R Aging Detail | detalle de vencimientos de ctas. por cobrar (A report that gives an in-depth view of the amounts your customers owe your company at a selected date) |
| comp., MS | A/R Aging Detail report | informe detallado de vencimientos de cuentas por cobrar (A report that gives an in-depth view of the amounts your customers owe your company at a selected date) |
| comp., MS | A/R Aging Summary | resumen de vencimientos de ctas. por cobrar (A report that displays all the amounts owed to your company, by customer and by the number of days outstanding at a selected date) |
| comp., MS | A/R Aging Summary report | informe resumido de vencimientos de cuentas por cobrar (A report that displays all the amounts owed to your company, by customer and by the number of days outstanding at a selected date) |
| automat. | A-R wire | hilo de lectura de dirección |
| automat. | A-R wire | hilo A-R |
| vac.tub. | A.T.R. tube anti-transmit/receive tube | tubo A.T.R. antitransmite/recibe |
| commun., el. | A.T.R.tube | tubo antitransmite/recibe |
| commun., el. | A.T.R.tube | tubo ATR |
| transp., met. | black R.A.E.treatment | mordentado negro neutral |
| commun. | Committee for a R&D Programme in Advanced Communication Technologies for Europe | Comité para un programa de I+D sobre técnicas avanzadas de telecomunicación para Europa |
| el. | equivalent r.m.s.sine wave power of the peak of a multiplex telephone signal | potencia equivalente de cresta de una señal telefónica múltiplex |
| gen. | Gray is spelled G-R-A-Y in the United States | Gris se deletrea "G-R-A-Y" en Estados Unidos |
| gen. | M.A.D.R.I.D report | informe M.A.D.R.I.D |
| gen. | M.A.D.R.I.D report | informe principal de evaluación y descripción, para debate interno |
| chem. | M.A.R. | reactivo microanalítico |
| commun., agric. | Opportunities for Applications of Information and Communication Technologies in R ural A reas | Aplicación de las Tecnologías de la Información y la Comunicación en Zonas Rurales |
| el. | R M S value of a periodic quantity | valor eficaz de una magnitud periódica |
| antenn. | R.F., I.F. and A.F. penthode | pentodo amplificador de R.F., I.F. y A.F. |
| med. | R.Sc.A. | posición acromioilíaca derecha anterior |