 |
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| disc (A round, flat piece of nonmagnetic, shiny metal encased in a plastic coating, designed to be read from and written to by optical (laser) technology) | |||
| discs: 25 phrases in 7 subjects |
| Communications | 2 |
| Electronics | 1 |
| General | 6 |
| Information technology | 6 |
| Microsoft | 1 |
| Patents | 3 |
| Sound recording | 6 |