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| amplitude-frequency characteristic (3) |
| амплітудно-частотна характеристика (3) |
| acoustic system (2) |
| loudspeaker (2) |
| акустична система (2) |
| гучномовець (2) |
| acoustic filter (1) |
| driver (1) |
| dynamic (1) |
| phase inverter (1) |