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| Subject | Spanish | English |
| el. | sistema compatible de banda lateral única | compatible single-sideband system |
| transp. | sistema compatible de gestión de los modos de transporte | compatible management system for transport modes |
| commun. | sistema compatible de televisión en color | compatible colour television system |
| commun. | sistema compatible de televisión en color | compatible color television system |
| IT | sistema de compartición en el tiempo compatible | compatible timesharing system |
| comp., MS | Sistema digital compatible de alta definición | High Definition Compatible Digital (A patented encode/decode process that improves the quality of all forms of digital audio recording and playback by increasing resolution and reducing distortion that occurs during analog-to-digital (A/D) and digital-to-analog (D/A) conversion, digital pro) |