System 12
| line circuit
| system 12 | |
| IT environ. | sistema 12 |
| line circuit | |
| el. | circuito en línea |
| tech. | circuito de línea; circuito de señal |
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| sistema 12 | |||
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System 12 : 4 phrases in 1 subject |
| Information technology | 4 |