track-circuit
| permissive-block
| track circuit | |
| transp. el. | circuito vía; circuito de vía |
| permissive block | |
| commun. transp. | señales de bloqueo rebasables |
| railw. sec.sys. | bloqueo permisivo |
| |||
| circuito vía; circuito de vía | |||
|
track-circuit : 59 phrases in 5 subjects |
| Communications | 2 |
| Electronics | 4 |
| Information technology | 4 |
| Rail transport | 14 |
| Transport | 35 |