| Subject | English | Slovene |
| sat.comm. | principal reference plane for a body in space | osnovna referenčna ravnina za telo v vesolju |
| magn. | reference-earth plane | referenčna plošča |
| magn. | reference-earth plane | plošča referenčnega potenciala |
| magn. | reference-ground plane | referenčna plošča |
| magn. | reference-ground plane | plošča referenčnega potenciala |