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| zona de referencia | |||
| campo de referencia (A field that is associated with another field so that their properties always match. If the properties in one field are changed, the properties in the other field are updated automatically) | |||
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reference field : 4 צירופים, 3 נושאים |
| אנטנות ומובילי גל | 1 |
| טכנולוגית מידע | 2 |
| רָדִיוֹ | 1 |