| Subject | English | Spanish |
| industr., construct. | clock for electric clock system | aparato de relojería para red de distribución y de unificación de la hora |
| mil., artil. | clock system | empleo del reloj para la dirección del viento |
| mil., artil. | clock system | tiro con reloj |
| tech. | clock system | empleo del reloj |
| unions. | clocking-in system | sistema de control horario |
| el. | inverted clock-pulse system | sistema de pulsación patrón invertida |
| el. | system clock | reloj del sistema |
| comp., MS | system clock | reloj del sistema (The electronic circuit in a computer that generates a steady stream of timing pulses--the digital signals that synchronize every operation. The system clock signal is precisely set by a quartz crystal, typically at a specific frequency between 1 and 50 megahertz. The clock rate of a computer is one of the prime determinants of its overall processing speed, and it can go as high as the other components of the computer allow) |