| Subject | English | Bulgarian |
| comp., MS | disk duplication | дисково дублиране (The process of using third-party hardware or software to copy a full master Windows installation onto the hard disks of multiple destination computers. The master computer and destination computers must have compatible hardware abstraction layers (HALs). The destination computer can be delivered directly to customers, or it might require additional processing on the factory production line) |
| construct. | duplication machine | фоторепродукционен апарат |
| social.sc. | duplication of benefits | припокриване на обезщетения |
| insur. | duplication of coverage | дублиране на застраховане (алешаBG) |
| construct. | duplication punched card | дублетна перфокарта |
| construct. | duplication punched card | перфокарта-шаблон |