all-relay interlocking
| box
| all relay interlocking abbr. | |
| railw. sec.sys. | puesto todo relés |
| box abbr. | |
| gen. | arca; estuche |
| ed. | apartado postal; buzón; casilla |
| food.ind. | caja |
| hobby | potro de madera |
| math. | recuadro |
| mech.eng. | casquillo |
| |||
| puesto todo relés | |||
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all-relay interlocking : 4 phrases in 2 subjects |
| Communications | 1 |
| Transport | 3 |