 |
| |||
| audio frequency AF (NF); low frequency | |||
| audible frequency; audible tone | |||
| Low Frequency | |||
| audio frequency (AF); voice frequency | |||
| audiofrequency | |||
| |||
| AF; AF -audio frequency; low frequency (30-3000 KHz) | |||
| low-frequency | |||
| a.f. | |||
| |||
| low-frequency | |||
| 德语 词库 | |||
| |||
| Nf | |||
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Niederfrequenz : 33 短语, 7 学科 |
| 一般 | 2 |
| 冶金 | 2 |
| 医疗器械 | 3 |
| 医疗的 | 1 |
| 技术 | 10 |
| 电子产品 | 12 |
| 通讯 | 3 |