例文
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- Difference frequencies could be generated as are observed in the human.
- The sum and difference frequencies were then available in the mixer's anode circuit.
- Some difference frequencies originating in the cochlea can be observed in the outer ear.
- Alternatively difference frequency generation ( DFG ) can be used.
- The difference frequency between 9.9 and 11.7 yields a frequency with a 64-year period.