| English | eng-000 |
| backfeed | |
| 普通话 | cmn-000 | 反馈 |
| English | eng-000 | back coupling |
| English | eng-000 | bussback |
| English | eng-000 | couple back |
| English | eng-000 | feedback |
| English | eng-000 | flyback |
| English | eng-000 | load-back |
| English | eng-000 | reaction |
| English | eng-000 | reactive |
| English | eng-000 | return coupling |
| English | eng-000 | tickling |
| English | eng-000 | ultramagnifier |